Pregnancy Safety Report | Cremores Home Safety
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Pregnancy Safety Medical Report Read Tonight

The Doctor Said “Sometimes We Never Know Why.” My CO Test Said Something Different.

I lost my daughter at 31 weeks. Every prenatal check looked perfect. The CO detector on my wall was running the whole time. Here is what no one tested for — and why your baby may be at risk right now.

Pregnant woman sitting on a bed in morning window light, hand resting on her belly
A quiet morning, one hand on her belly, and the question every expecting mother wants answered: is the air safe?

"On Monday, Clara kicked so hard Daniel felt it through two layers of clothing. By Thursday, she had stopped moving. The white detector in the hallway stayed green the entire time."

— Amanda Morris, about her daughter Clara

I am not going to ease into this. I do not have patience for that anymore — and if you are pregnant, you do not have time for it either. So here is the truth, as plainly as I can say it:

The carbon monoxide detector in your home may be doing exactly what it was designed to do — and still not be enough to keep your baby safe.

I know because it happened to me. And I know because an obstetric specialist, an HVAC engineer, and a fire captain sat in my home after Clara was born without a cry at 31 weeks and 2 days, and explained slowly, gently, the way people speak to someone who has just lost her entire world, that the device I trusted to protect her had never been designed to do that.

My name is Amanda Morris. I am writing this from the living room of the house where Clara died. And I am 16 weeks pregnant now — which means every morning brings equal parts fear and love, inseparable from each other. I am writing because I cannot sit here with what I know and stay silent.

The Pregnancy That “Looked Perfect”

Ultrasound photo held carefully in warm natural light
Every appointment looked normal. Every scan gave us another reason to believe everything was fine.

Daniel and I tried for eleven months before the second line appeared. I sat on the bathroom floor at 5:47 in the morning, staring at the test as if I were holding something that could shatter at any moment. I did not tell him for four hours because I needed to be sure I had not imagined it.

The first trimester was brutal — nausea every morning for eight straight weeks, food aversions so strong I could not sit in the same room as coffee. But I did not complain. I had read that strong morning sickness meant strong hormones, and I wanted every discomfort that came with a healthy pregnancy.

At 20 weeks, the anatomy scan showed no abnormalities. At 24 weeks, her growth was right on track. At 28 weeks, my OB used the word “textbook.” She said I was “one of the easy ones.” I drove home that afternoon alone in the car, saying the name we had chosen out loud — Clara — just to hear it.

At 29 weeks, the headaches started. Not migraines — a dull, steady pressure behind both eyes that settled in every afternoon. I called the nurse at my doctor’s office. She said it was common in the third trimester: hormones, blood-volume changes, dehydration. Drink more water. Rest more. Take Tylenol if it gets worse.

I followed every instruction.

Daniel said he was sleeping deeper than usual — not his normal sleep, but the kind of sleep where the alarm barely reached him. He blamed work stress. Our dog, Roux, a nine-year-old Labrador, stopped sleeping at the foot of our bed around week 29. He moved into the hallway just outside the bedroom door. I thought he was getting older. I was wrong about so many things.

"On Monday, Clara kicked so hard Daniel could feel it through my sweater and flannel. He looked at me with wet eyes. By Thursday, I realized I had not felt her for two days. I told myself she was just quiet. By Friday, I stopped lying to myself."

— Amanda

The Ultrasound Room

Any woman who has ever been in that room, under those circumstances, knows the feeling when the technician stops talking. That silence is different from ordinary silence. It has weight. She looked at the screen, not at me, and I watched her face become professional in the way people do when they are hiding something they are not allowed to say yet.

She stepped out to get the doctor.

The doctor came in. She sat beside me on the exam table — not across from me, not standing. Beside me. She put her hand on my arm and said, "Mrs. Morris. I am so sorry. There is no heartbeat."

I called Daniel from the parking lot. I could not arrange the words in the right order. He arrived in eleven minutes. We sat in the car for a long time without speaking, because there was nothing to say that was not also the thing that had just ended.

They induced labor that night. Clara was born without a cry at 31 weeks and 2 days. She weighed 3 pounds 14 ounces. She had Daniel’s broad forehead and thick dark hair.

I held her for five hours. I memorized every part of her. I told her I was sorry. I told her I did not know. I told her I would find out.

70 PPM
Legal alarm threshold — standard detectors
Can wait 4 hrs to alarm even then
20–50
PPM
Level linked to fetal risk over weeks
Standard detector: completely silent
30 PPM
When Cremores LiveSense alarms
Before your first symptom

The Question I Could Not Stop Asking

My OB told me, kindly and carefully, that sometimes we do not get an answer. That unexplained stillbirth happens in roughly 1 in 160 pregnancies. That we could run tests — placental pathology, genetic analysis, cord histology — but sometimes everything comes back normal and we simply never know.

I told her I needed to know. She referred me to a maternal-fetal medicine specialist, a high-risk obstetrician, who reviewed everything within two weeks of Clara’s death.

Her name was Dr. Chaudry. She did not sit behind a desk. She pulled her chair next to us. She reviewed my entire prenatal record, the placental pathology, Daniel’s health history. Everything was unremarkable. Normal. No explanation.

Then she stopped and asked about our house.

The Test My OB Never Ordered — But Should Have

Dr. Chaudry portrait
Dr. Chaudry Maternal-Fetal Medicine Specialist
Dr. Chaudry Explains — The Test No One Had Ordered

Dr. Chaudry started with one sentence that changed how I understood everything: carbon monoxide is not just “bad air.” It becomes a blood problem.

When you breathe in carbon monoxide, it passes through the lungs into the bloodstream. There, it attaches to hemoglobin — the protein inside red blood cells that normally carries oxygen. Once hemoglobin is carrying carbon monoxide instead of oxygen, it is called carboxyhemoglobin, or COHb.

Diagram explaining how carbon monoxide binds to blood as carboxyhemoglobin
CO becomes dangerous because it can bind to blood and reduce the oxygen your body can carry.

That matters because hemoglobin carrying carbon monoxide cannot carry oxygen normally. The result can look deceptively ordinary at first: pressure headaches, fatigue, nausea, dizziness, unusual sleepiness, or a foggy feeling that is easy to blame on pregnancy, stress, dehydration, or poor sleep.

Pregnancy changes the risk equation. Dr. Chaudry explained that carbon monoxide can cross the placenta. The mother may feel only mild symptoms — or symptoms that sound like normal pregnancy — while the baby may be more vulnerable because the oxygen supply depends entirely on what is moving through the mother’s blood.

She was careful not to promise that one test could explain every loss. But she said something I have never forgotten: “If there is a fuel-burning appliance in the home, and there are headaches, fatigue, nausea, heavy sleepiness, or a detector that only shows a green light, chronic low-level CO exposure deserves to be ruled out.”

Then she ordered the test I had never heard of: a blood carboxyhemoglobin test.

The exact test to ask for

Test name
Carboxyhemoglobin blood test
Also called
COHb level or carboxyhemoglobin level
What it checks
How much carbon monoxide is bound to your blood
Why it matters
It helps your clinician evaluate recent or ongoing CO exposure

My COHb result was 8.4%. Daniel’s was 7.1%. Dr. Chaudry did not call it an emergency number. She called it a pattern — the kind of pattern that can happen when a family has been breathing low-level carbon monoxide repeatedly without realizing it.

“This is what makes chronic household exposure so hard to catch,” she said. “It does not always look like the dramatic version people imagine. Sometimes it looks like a pregnant woman with headaches. A tired partner. A dog avoiding the bedroom. A green light on the wall. And no one connects the dots.”

What to say to your doctor

If you are pregnant and want to rule this out, do not say only, “I feel tired.” Be specific. Give your doctor a clear reason to order the right test.

Use this exact script

“I am pregnant and I have fuel-burning appliances in my home — like a gas furnace, gas stove, gas water heater, fireplace, or attached garage.”
“I have had headaches, unusual fatigue, nausea, dizziness, or heavy sleepiness, and I want to rule out chronic low-level carbon monoxide exposure.”
“Can you order a carboxyhemoglobin blood test, also called a COHb level, today?”

If your doctor asks why, say this plainly: “My home detector only shows a green light. It does not show the actual PPM in my air, and I do not know whether I have been exposed below the alarm threshold.”

When to get help urgently

Do not wait for a routine appointment if multiple people in the home have headaches, nausea, dizziness, confusion, chest discomfort, unusual sleepiness, or symptoms that improve when leaving the house and return when coming home. Leave the area, get fresh air, and contact emergency services or your local poison control center for guidance.

Dr. Chaudry’s final point was the simplest one: testing your blood tells you what already happened. A live PPM display helps you see what is happening now. That is why she told me to stop relying on a green light and start looking for a number.

She asked if we had a CO detector. I said yes. She asked if it had alarmed. I said no. She asked when I had last replaced it. I did not know. She said she was going to call the fire department.

What Captain Devereux Found In Our Basement

The fire department sent two people. The senior officer, Captain Devereux, removed his helmet when he stepped into our house. They went into the basement with professional gas meters. They were down there for thirty-five minutes.

Captain Devereux came upstairs and did not sit down. He stood in our kitchen and said: "Mrs. Morris. Your furnace has a cracked heat exchanger. It is a crack in the metal wall that separates the combustion chamber from the ductwork. Every time your furnace ran this winter, carbon monoxide escaped through that crack and went straight into the air ducts. Into every room. Including your bedroom."

He said the crack pattern suggested at least three to four months of continuous exposure. Possibly longer.

"This happens silently. The furnace runs. The thermostat works. Heat comes out. The flame looks normal. Nothing tells you something is wrong. Meanwhile, CO moves through the house at 30, 40, 50 PPM every time the heat kicks on. All winter."

HVAC technician inspecting a gas furnace in a basement
A small furnace problem can spread low-level CO through the rooms where a family sleeps.
What Standard CO Detectors Do Not Tell You
  • A green light only confirms power. It tells you nothing about the air inside your home.
  • The test button checks the alarm speaker — not the sensor. A dead sensor can still beep when you press test.
  • CO sensors expire after 5–7 years. After that, the detector can look fine while no longer sensing properly.
  • By law, many standard detectors can stay silent until CO reaches 70 PPM — and may still delay before alarming. Pregnancy risk can exist below that level.
  • Standard CO detectors are blind to natural gas and propane leaks. If a gas line fails, they may never make a sound.
  • Federal standards are built around healthy adults — not pregnant women and not unborn babies.

The Science Of Why Your Baby Is More Vulnerable Than You

Why A Fetus Cannot Tolerate What An Adult Can Survive

  • Fetal hemoglobin binds CO more readily and releases it more slowly than adult blood.
  • CO can remain in fetal blood much longer than in adult blood, especially with repeated exposure.
  • CO crosses the placenta freely — the air you breathe can affect the baby you carry.
  • The mother may only feel mild symptoms while CO builds in the baby’s blood.
  • Chronic low-level exposure can contribute to oxygen deprivation and pregnancy complications.
  • CO exposure is not routinely tested during stillbirth investigations unless specifically requested.

What The PPM Scale Actually Looks Like

Carbon Monoxide Levels — What Each Number Means For Your Baby

0 PPM 30 50 70 150+
0 PPMClean air
Safe — no CO detectedWhat Cremores shows when your air is clean. The only number that means your baby is not being exposed. Cremores displays 0
30 PPMEarly warning
Adults may begin headaches and fatigueFor pregnancy, continuous exposure at this level for days or weeks can matter. Standard detector: completely silent. Cremores alarms hereStandard: silent
50 PPMDanger
Symptoms may worsen in adults. Higher risk for the fetus.A pregnant woman may feel “just tired” or “third trimester normal” while the fetus is exposed continuously. Standard: still silent
70+ PPMCritical
Standard alarms may finally trigger — after a delayBy the time many detectors sound, a pregnant woman and her baby may have been breathing unsafe air for hours or weeks. Standard alarm finally sounds
"The homes I worry about most are not the ones with catastrophic leaks. They are the ones with small, slow leaks — 20, 30, 40 PPM — that standard detectors may never report. A pregnant woman in that house does not know. Her symptoms feel like pregnancy. The detector is green. And the baby may be losing oxygen slowly."
Captain J. Devereux portrait
Captain J. Devereux
Fire Department · 19 years emergency response · Uses Cremores at home

What Captain Devereux Showed Me Next

Before he left, he reached into his bag and placed another device on our kitchen table beside our old white detector. It had a screen — a digital display with real numbers. Not a light. Numbers. It read: 0.

He said: "This is Cremores LiveSense. This is what most of my crew uses at home. Grade 3 sensors — the same class of technology used in professional field meters. It shows PPM all the time. Zero means clean air. Anything above zero, you know immediately. You do not have to wait for an alarm. You see it."

He placed the two devices side by side: our old detector and Cremores. Both had green lights. But one showed a number. The other showed a glow.

"A light tells you the device is on. A number tells you what is in the air. For a pregnant woman, those are not the same thing. They are not even the same category."

Then he said the part I think about every morning:

"And your old detector — even working perfectly — is completely blind to natural gas and propane. If the problem had been a gas-line issue instead of CO, that device would not make a sound. Cremores detects CO, natural gas, propane, and combustible gas. All on one screen. All the time."

The Detector Captain Devereux Brought Into Our Home

Real Numbers. Not A Green Light.

More than 10,000 families have already replaced their standard detectors. The question is whether your home is next — or whether you find out the hard way.

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Cremores LiveSense CO & Gas Detector
Real-time CO, natural gas, and propane monitoring on one clean screen
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Cremores LiveSense CO & Gas Detector
Built for families who want real numbers, not a green light
Live digital display shows exact PPM — no guessing, no blind hope
Alarms at 30 PPM — far earlier than standard thresholds
Detects CO, natural gas, and propane — 3 invisible threats, 1 device
Professional Grade 3 sensors — the class used by first responders
UL 2034 certified · ETL Listed · 3-year warranty
Plug in. 60 seconds. No batteries, no app, no Wi-Fi, no setup

I Am Pregnant Again. This Time, Joy And Fear Arrive Together.

For seven months, Daniel and I did not talk about trying again. Not directly. The future became something we walked around carefully, like a room where the floor might give way if we stepped too hard.

Then one morning he said “our children” while making coffee, and neither of us corrected him. We both heard it. We both stood there quietly. That was the first time the future entered the house again without feeling like betrayal.

The positive test came at 6:08 on a Tuesday morning. I sat on the bathroom floor for twenty minutes before I trusted my eyes enough to stand. When I called Daniel, he answered on the second ring. I said only, “There are two lines.”

He was silent for a long moment. Then he said, “Okay. Now we know what we know. We are going to do this differently.”

That sentence has stayed with me through every appointment since.

At eight weeks, I lay on the ultrasound table with my hands locked over my stomach. I had been in rooms like that before. I knew the particular kind of silence that can happen before a life changes. Daniel sat beside me, holding my hand so tightly that my fingers went numb.

The technician moved the wand slowly. The screen flickered. For a few seconds, no one said anything.

Then she turned the monitor slightly toward us and said, “There it is. The heartbeat is strong — 162 beats per minute.”

Daniel exhaled like he had been underwater. He pressed his forehead against my hand. I cried, but not in the way people imagine happy crying. It was relief and terror at the same time. It was love arriving with its shadow attached.

Pregnancy after loss is not simple joy. It is not a clean new beginning. It is checking your body for signs, counting days until the next scan, and trying to love someone before you feel safe believing you will bring them home. It is hearing a heartbeat and still being afraid to trust the room.

But there are things I can control now that I did not know to control before.

I cannot control every outcome. No mother can. But I can control whether I keep trusting a green light that tells me nothing about the air in my home.

Right Now — 16 Weeks Pregnant

This Is My Home Now. This Is What Zero Means To Me.

I have four Cremores LiveSense units in this house: one beside my bed, one outside the nursery, one in the kitchen, and one near the furnace room. Every morning, before my feet touch the floor, I look at the number.

Bedroom: 0. Kitchen: 0. Nursery: 0. Furnace room: 0.

Zero does not erase what happened. It does not bring Clara back. But it gives me something I did not have before: evidence. Not reassurance. Evidence.

0
Bedroom PPM
0
Kitchen PPM
0
Nursery PPM
0
Furnace PPM
Pregnant woman looking at a Cremores LiveSense display showing zero PPM in morning light
The number I check every morning: zero.

If you are pregnant again after loss, I know you may be reading this with one hand on your stomach and one part of you afraid to hope. I will not tell you not to be afraid. Fear is what happens when love has already cost you something.

But I will tell you this: you deserve every piece of information you can get. You deserve numbers, not guesses. You deserve to know what is in the air while your baby grows.

And every morning that the screen says zero, I let myself believe in the day in front of me.

I do not believe any device can promise a perfect outcome. Pregnancy does not work that way. Life does not work that way. But I do believe in removing invisible risks once you know they exist.

I cannot give Clara back to myself. But I can give you the information I did not have.

If you are pregnant and you have a green-light detector on your wall, ask yourself: do you know what number is in your air right now? Do you know when that detector was installed? Do you know whether the sensor still works? Do you know what PPM level it is designed to alarm at?

If your answer is “I don’t know,” that is exactly where I was. That green light is not a guarantee. It is a power indicator. It means the device has electricity. It does not mean your air is safe.

Standard alarm thresholds can miss the pregnancy danger zoneMany standard detectors remain silent below 70 PPM. A fetus can be more vulnerable than a healthy adult in this range. Standards are written around adult exposure limits.
CO exposure is rarely tested unless you askUnless a doctor specifically orders carboxyhemoglobin testing, chronic CO exposure may go undetected. Ask your OB to add it if you have gas or fuel-burning appliances at home.
Cremores alarms at 30 PPM with live numbers on screenGrade 3 sensors. Real-time PPM display. Detects CO, natural gas, and propane. Plug in once, wait 60 seconds, and start monitoring immediately. Zero is safe. Any number above zero means check the source.
I cannot give Clara back to myself. But I can give you the information I did not have.

If you are pregnant right now — please do not trust a green light.
Please know your number.
Please make sure it is zero.
— Amanda Morris
For Clara. And for every baby whose mother is reading this tonight.
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Stop Hoping. Start Knowing.
Your Baby Deserves A Number, Not A Light.

Cremores LiveSense shows the exact PPM in your air — 24 hours a day, while you sleep, while your baby grows. Grade 3 sensors. 30 PPM alarm. CO, natural gas, and propane detection. Plug in. 60 seconds. Done.

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What Expecting Mothers Are Saying

★★★★★

"I am 28 weeks pregnant and read Amanda’s story at 1 a.m. I ordered three Cremores units before I went back to sleep. The fact that standard detectors can stay silent in the 20–50 PPM range — why is nobody talking about this?"

— Linda T.
28 weeks pregnant · Verified buyer
★★★★★

"I am an OB nurse. We almost never test carboxyhemoglobin in pregnancy unless someone specifically asks. I am sharing this article with every expecting patient I see. One by one."

— Hannah N., Midwife
OB nurse · 8 years experience
★★★★★

"Two weeks after installing Cremores, it read 22 PPM in our kitchen. Our HVAC technician found a corroded gas-stove connector — a slow leak that never triggered our old detector. I am 34 weeks. I have no words."

— Maria P.
34 weeks pregnant · Verified buyer
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