The reason for this is the following: 1. the body temperature rises during ovulation, the body’s hormone secretion changes, estrogen and progesterone secretion, the body temperature will be higher than usual about 0.3-0.5 ℃, after ovulation body temperature will generally recover. 2. the body temperature rises in early pregnancy, ovulation intercourse without contraceptive measures, the chances of pregnancy will be higher. The actual body’s estrogen secretion, and keep for a long time, the basic body temperature will be higher, appear body hot situation. 3, by bacteria, viral infection, will also lead to body hot. Elevated body temperature should be promptly checked for early pregnancy if there is intercourse without contraception. Low fever can be physically cooled by using antipyretic patches or using cold water soaked towels to cool down, while drinking more water.