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Educational article

Feeling Colder or Hotter Since You Became Pregnant? How to Put the Change in Context

Endomédicos

Endomédicos medical profile

Published 5 min read

Educational content. It does not replace an individual medical assessment and should not be used for self-medication.

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A pregnant person opens a window in their room and removes a light layer of clothing.
A scene of everyday ventilation illustrates how the environment can influence the perception of heat during pregnancy.

Can tolerance for cold or heat change during pregnancy?

Yes. Some people notice that certain environments feel hotter or colder, or that their comfort changes between day and night. Perception can vary with activity, clothing, ventilation, and other aspects of health. That sensation alone cannot identify a cause.

Feeling cold does not confirm hypothyroidism

Feeling cold or hot is nonspecific; it does not confirm hypothyroidism or hyperthyroidism. To assess thyroid function, the health care team considers your medical history and the full set of symptoms, and decides whether tests are needed. The cause cannot be determined from one isolated sensation.

How can I tell the difference between feeling hot and having a fever?

Feeling overheated does not necessarily mean you have a fever. To find out whether your body temperature is elevated, measure it with a thermometer. If you record a fever or have symptoms that concern you, contact the team caring for your pregnancy for guidance based on your situation. This article does not replace a clinical evaluation.

What to observe before your next appointment

If the change happens repeatedly, note when it occurs—for example, while sleeping, at home, or while traveling—how long it lasts, and whether it changes when you move to a different environment or change clothes. If you think you have a fever, write down the measured temperature and how you took it. You do not need to record every sensation; just identify a pattern you can describe.

Other changes to mention

Mention whether you also notice palpitations, tremors, or other changes, when they began, and whether they are occasional or persistent. Explain whether they affect your activities or rest. This information helps the prenatal care team assess the overall picture without assuming a thyroid-related cause in advance.

When to discuss it with your prenatal care team

Ask for guidance if the change persists, concerns you, or occurs along with other symptoms. If you have a measured fever, tell the team caring for your pregnancy so they can advise you on what to do based on your situation. The recommendation may depend on your medical history and how you are feeling.

If you take thyroid medication

Do not change or stop your dose because you feel colder or hotter. Any adjustment during pregnancy should be agreed upon with the professional managing your treatment and based on your situation and the recommended follow-up.

Describe the pattern without self-diagnosing

At your prenatal appointment, explain when you notice feeling cold or hot, how long it lasts, whether you measured a fever, and what other changes occur. Thyroid evaluation is determined by your medical history, associated symptoms, and clinical judgment—not by one isolated sensation. If you are in Bogotá, you can share these observations with the team caring for your pregnancy.

When to seek medical care

If symptoms persist, test results are abnormal, or you have questions about medication, arrange an individual assessment. Do not change treatment or doses without medical guidance.

Frequently asked questions

Do I need a thyroid test if I feel colder or hotter?

Not necessarily. The health care team decides whether thyroid evaluation is needed based on your medical history and other symptoms; one isolated sensation does not determine whether a test is needed.

Does feeling hot mean I have a fever?

No. Feeling hot does not confirm a fever; to find out whether your body temperature is elevated, measure it with a thermometer. If you are concerned about the result or have other symptoms, consult your prenatal care team.

Can I adjust my thyroid medication based on how I feel?

No. Do not change the dose or stop the medication without guidance from the professional managing your treatment.

Does this topic resonate with you?

Every case is different. Book a consultation to review your history, test results and goals with a personalized plan.

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