Summary. Pregnancy can cause unpleasant temperature swings, especially as a person's body grows, and their heart and lungs have to work harder as a result. Most people notice increasing feelings of heat, but in some cases, pregnancy can cause chills or shifts between hot and cold temperatures.

Does your temperature change when pregnant?

You're not imagining it — every stage of pregnancy can slightly raise your body temperature. Your skin may feel warmer to touch. You're likely sweating more and may even have night sweats. At the beginning of your pregnancy, new hormones are like little workers that help keep everything humming along smoothly.

Does body temperature rise in early pregnancy?

At this early stage in the pregnancy, there typically won't be any major outward changes in your body, though your basal body temperature — your temperature first thing in the morning — will be higher than usual.