(One study has linked fevers in early pregnancy to an increased risk of neural tube defects.) In most cases, hot flashes don't require a call to your healthcare provider, but it's important to recognize when you have a fever and not just a hot flash, as fevers can signal an infection, and fevers during pregnancy can be dangerous.
You’ll know you're having one when you feel a sudden blast of warmth – you might also start sweating and your skin may redden, as if you're blushing. Hot flashes usually affect the head, neck, and chest, and they can last from seconds to minutes. Those fluctuating hormone levels – particularly drops in estrogen – as well as an increased metabolic rate during pregnancy can cause the surges of heat that may leave you kicking off your sheets at night or fanning yourself wildly in the grocery store.
Studies have shown that women who are overweight or obese are more likely to experience hot flashes while pregnant.
More than one-third of women have hot flashes during pregnancy some also have them after giving birth. On the roller coaster of pregnancy hormones, hot flashes – like mood swings – can be part of the ride. Yes, it's normal to have hot flashes during pregnancy.