Most people expect pregnancy to come with hot flashes and sweating, not shivering under blankets. Yet many pregnant women notice they feel cold more often, especially in their hands, feet, or late at night. This can be normal in some cases, but it can also hint at anemia, thyroid changes, infections, or blood sugar issues. Understanding the difference helps you stay comfortable and safe.
How Pregnancy Changes Your Temperature Regulation
Pregnancy transforms almost every system in your body, including how you produce and lose heat. Your blood volume rises, hormones surge, and your heart works harder to support both you and your growing baby. These changes can affect how warm or cold you feel from day to day.
While some women feel overheated, others experience the opposite—chills or a constant sense of being cold even when the room temperature is normal. Both can fall within a normal range, depending on your health, body type, and stage of pregnancy.
- Progesterone and other hormones influence circulation, sometimes pulling warm blood toward the uterus and away from your fingers and toes.
- Your metabolism speeds up, but if you are not eating or hydrating enough, your body may have less energy available to maintain a comfortable temperature.
- Shifts in thyroid function or red blood cell production add another layer, occasionally tipping you toward feeling unusually cold.
Common Causes Of Feeling Cold During Pregnancy
Not every chill is a sign that something is wrong. However, understanding the most frequent reasons you might feel cold helps you decide when simple lifestyle tweaks are enough and when a checkup is a smarter choice.
Below are some of the more common explanations for feeling cold while pregnant, from entirely harmless to more medically significant.
1. Normal Hormonal And Circulatory Shifts
Hormones like progesterone relax blood vessels and alter circulation patterns, which may make your extremities feel cooler even if your core temperature is normal. These changes can start early in pregnancy and often become more noticeable as your uterus grows and demands more blood flow.
In some women this shows up as cold hands, cold feet, or alternating periods of feeling flushed and chilled. If you otherwise feel well, have normal energy, and no other worrying symptoms, this may simply be how your body handles pregnancy.
- Cold sensations are often mild and improve with warm socks, layered clothing, or light movement.
- There is usually no fever, no rapid heart rate, and no severe fatigue associated with these normal shifts.
2. Iron-Deficiency Anemia
During pregnancy, your body needs more iron to build extra red blood cells and supply oxygen to your baby. If you do not have enough iron, or your body struggles to keep up with demand, you can develop iron-deficiency anemia, which often causes a feeling of chilliness.
Red blood cells carry oxygen, and when their numbers are low, your tissues may not get enough oxygen to maintain warmth and energy. This can make you feel cold even in a warm room.
- Typical signs can include fatigue, pale skin, shortness of breath with mild activity, dizziness, and headaches.
- Your prenatal blood tests usually screen for anemia, and your provider may recommend an iron supplement or diet changes if your levels are low.
3. Thyroid Changes (Hypothyroidism)
The thyroid gland helps regulate metabolism and body temperature. When it is underactive—a condition called hypothyroidism—you may feel unusually cold, tired, and mentally foggy. Pregnancy can unmask or worsen thyroid problems in some women.
If you already have thyroid disease, pregnancy often requires medication adjustments. If you do not, but you notice persistent chills, extreme fatigue, dry skin, constipation, or weight gain that feels out of proportion to your appetite, mentioning thyroid testing to your provider is wise.
- Treated hypothyroidism in pregnancy is usually very manageable with medication and monitoring.
- Untreated thyroid problems can affect both your health and your baby’s development, so they should not be ignored.
4. Infections And Fever-Related Chills
Sometimes feeling cold is actually a response to a rising body temperature. When you have a fever from an infection, your internal “thermostat” resets higher, and you may shiver as your body warms itself up to that new set point.
With infections like the flu, urinary tract infections, or other illnesses, chills are usually accompanied by additional symptoms such as body aches, burning with urination, cough, or feeling generally unwell. Any suspected infection in pregnancy should be taken seriously.
- Call your provider if you have chills plus a measured fever, persistent pain, or other worrying symptoms.
- Do not start or stop medications on your own; always get professional advice during pregnancy.
5. Low Blood Sugar Or Inadequate Calorie Intake
Growing a baby requires extra energy. If you are skipping meals, eating very lightly, or dealing with nausea and vomiting, your blood sugar may dip low enough to leave you feeling weak, shaky, and sometimes cold.
Eating small, balanced meals and snacks throughout the day can help keep your blood sugar stable and give your body more fuel to maintain warmth.
- Pair carbohydrates with protein or healthy fats, such as fruit with nuts or whole-grain crackers with cheese.
- Severe or persistent inability to keep food down must be discussed with your healthcare provider.
6. Underlying Medical Conditions
Less commonly, feeling cold may be related to underlying conditions like autoimmune disorders, circulation problems, or vitamin deficiencies other than iron. In these situations, cold sensations might be one of many ongoing symptoms.
A detailed medical history and blood work allow your provider to look beyond pregnancy-specific issues and check for broader health concerns that could be affecting how you feel.
Normal Vs. Concerning Chills: At-A-Glance Table
The table below can help you quickly compare mild, expected cold sensations with those that might signal a problem. It is not a substitute for medical advice but can guide your decision about when to call your provider.
| Type of cold sensation | Typical features | What it may mean | Suggested response |
|---|---|---|---|
| Mild cold hands and feet | Comes and goes, improves with socks, movement, or warmer clothing | Normal circulation and hormonal changes | Use layers, gentle activity, mention at routine visits if persistent |
| Constant feeling cold with fatigue | Low energy, pale skin, shortness of breath, dizziness | Possible anemia or low thyroid | Schedule a checkup and ask about blood tests |
| Chills plus fever or aches | Body pains, headache, cough, burning with urination, or other clear illness signs | Likely infection | Call your provider promptly; follow their guidance on next steps |
| Shivering with confusion or severe weakness | Hard to stay awake, chest pain, difficulty breathing, or very fast heart rate | Potential emergency | Seek urgent or emergency care without delay |
Safe Ways To Warm Up During Pregnancy
When you feel chilled, comfort matters, but safety comes first. In pregnancy, extremely high temperatures—like very hot tubs or saunas—are not recommended. The goal is gentle warming that supports circulation without overheating your core body temperature.
Simple lifestyle strategies often go a long way toward keeping you warm while protecting your baby.
Layering Clothes And Bedding
Layering lets you respond quickly to temperature swings. As your hormones change throughout the day, you may switch from chilly to flushed and back again.
- Wear a breathable base layer such as cotton, then add a warm sweater or cardigan you can remove easily.
- Use warm socks or slippers to help with cold feet, especially on tile or hardwood floors.
- At night, choose a light blanket plus an extra throw you can push away if you warm up.
Warming Foods And Drinks
Warm liquids and nourishing meals do more than comfort your mood; they also provide energy for your metabolism to generate heat. Just be mindful of caffeine and sugar intake.
- Sip warm water with lemon, herbal teas that are considered pregnancy-safe, or broth-based soups.
- Include iron-rich foods such as lean red meat, beans, lentils, fortified cereals, and leafy greens, especially if you are at risk for anemia.
- Add sources of vitamin C like citrus, berries, or bell peppers to help your body absorb iron from plant foods.
Gentle Movement To Boost Circulation
Light activity helps bring warm blood to your hands and feet and can improve overall energy. It also supports healthy pregnancy weight gain and emotional well-being.
- Short walks, prenatal yoga, or simple stretching routines can encourage better circulation.
- Avoid standing completely still for long periods, which can make you feel colder and contribute to swelling.
- Always follow your provider’s activity recommendations, especially if you have a high-risk pregnancy.
Using Heat Packs And Warm Baths Safely
Localized warmth can feel wonderful, but extreme heat should be avoided in pregnancy. Your core body temperature should not rise significantly for a prolonged period.
- Use warm (not hot) water bottles or heating pads on a low setting and keep them away from your belly. Limit sessions to about 15–20 minutes.
- Choose lukewarm to comfortably warm baths rather than very hot tubs or saunas, which can raise your body temperature too much.
- If you feel flushed, dizzy, or unwell while using heat, stop immediately and let your body cool down.
When Feeling Cold Means You Should Call Your Doctor
Most of the time, mild chills or cold hands during pregnancy are not an emergency. Still, it is important to know when feeling cold could point to something more serious that warrants professional evaluation.
Trusting your instincts matters. If something feels off, even if it does not fit neatly into a checklist, reaching out to your provider is reasonable.
Red-Flag Symptoms To Watch For
Call your healthcare provider promptly if your cold sensations come with any of the following symptoms:
- Fever, body aches, sore throat, painful urination, or other clear signs of infection.
- Extreme fatigue, shortness of breath at rest or with minimal effort, chest discomfort, or rapid heart rate.
- Noticeable swelling in the face or hands, severe headache, or vision changes.
- Persistent dizziness, fainting spells, or difficulty concentrating.
- Reduced fetal movement later in pregnancy compared to your usual pattern.
What Your Provider Might Check
If you report feeling cold, especially with other symptoms, your provider may order tests to pinpoint the cause. These evaluations help distinguish between normal pregnancy changes and treatable conditions.
- Blood tests may look at your hemoglobin, iron stores, thyroid hormone levels, and markers of infection.
- Urine tests can help identify urinary tract infections or other kidney-related issues.
- Vital signs such as blood pressure, heart rate, and temperature provide clues about your overall stability.
Supporting Your Overall Health To Reduce Chills
Addressing the big picture of your health can make feeling cold less likely and improve how you feel throughout pregnancy. Small, consistent habits add up over time.
Think in terms of sleep, nutrition, stress management, and scheduled prenatal care—each of these plays a part in how your body handles temperature and energy demands.
- Prioritize regular meals and snacks: Avoid long gaps without food, especially if you are prone to nausea or blood sugar dips.
- Stay hydrated: Dehydration can worsen fatigue and make temperature regulation harder; keep water or another pregnancy-safe drink nearby.
- Keep all prenatal appointments: Routine visits are your chance to catch anemia, thyroid issues, or other concerns early.
- Manage stress: High stress levels can affect sleep and appetite, indirectly impacting your warmth and comfort.
- Sleep in a comfortable environment: A slightly cool bedroom with adequate blankets allows you to add or remove layers as needed during the night.
Frequently Asked Questions About Feeling Cold During Pregnancy
Is it normal to feel cold in early pregnancy?
Yes, some women notice feeling colder in the first trimester as hormones rapidly shift and blood flow is redirected to support the developing embryo. As your body adjusts, your temperature sensations may swing between hot and cold over the course of a day.
Can feeling cold harm my baby?
Simply feeling cold, on its own, does not usually pose a direct risk to your baby. The underlying cause is what truly matters. Conditions like severe anemia, untreated thyroid problems, or serious infections can affect pregnancy health, which is why persistent or intense chills deserve medical attention.
Should I take my temperature every time I feel chilled?
There is no need to check your temperature constantly, but it is helpful to take it if you feel unwell, have body aches, or suspect a fever. A normal temperature with mild chills is usually less concerning than chills paired with a true fever.
Can I use an electric blanket while pregnant?
Using an electric blanket on a low setting for short periods is generally considered safer than very hot baths or saunas because it mainly warms the surface of your body. Still, avoid overheating, keep settings moderate, and stop using it if you feel too warm, dizzy, or uncomfortable. If you have specific medical conditions, ask your provider for personalized advice.
Will iron supplements stop me from feeling cold?
If your cold sensations are related to iron-deficiency anemia, taking iron as prescribed and improving your dietary intake can help over time. However, if your iron levels are normal, iron supplements will not fix the problem and could cause side effects, so supplements should always be guided by blood test results.
Is it safe to take cold or flu medications when I have chills?
Some over-the-counter medications may be safe in pregnancy, but others are not recommended, especially in the first trimester. Before taking any cold or flu remedy—whether pill, syrup, or herbal product—speak with your healthcare provider or pharmacist to confirm it is appropriate for you and your stage of pregnancy.
Key Takeaways For Managing Pregnancy Chills
Feeling cold during pregnancy is not always a sign that something is wrong. For many women, it is just another side effect of powerful hormonal and circulatory changes. Warm clothes, balanced meals, hydration, and gentle movement can offer steady relief.
However, persistent chills, especially when combined with fatigue, shortness of breath, fever, or other concerning symptoms, are a reason to contact your healthcare provider. Listening to your body and asking questions early helps protect both your comfort and your baby’s well-being.
