Body temperature changes are a common phenomenon during intercourse during ovulation. However, sometimes the body temperature will suddenly rise during this process, and sometimes it will suddenly drop. This condition is called "hot and cold" body temperature changes.

However, after ovulation, a woman's body temperature usually gradually decreases. This is because a woman's body is preparing for pregnancy and needs time to produce enough hormones to sustain the pregnancy. This process is called "pregnancy reaction."

During ovulation, a woman's body undergoes a series of changes that affect body temperature. Therefore, if you want to get pregnant, it is best to have sex during the ovulation period and pay close attention to changes in body temperature to ensure that the chance of pregnancy is maximized.

If you have any questions about temperature changes and pregnancy, please consult your doctor or professional advisor.