When you have your period is it normal for to feel hot?

Yes. This is known as Menstrual vasodilation. Hot flashes are a common symptom of premenstrual syndrome (PMS) and may continue into your period. They're caused by changes in hormone levels, particularly the rise and fall of estrogen and progesterone. When estrogen and progesterone levels drop, blood vessels relax and dilate and blood flow increases, causing the skin to feel flushed and hot.