The female body temperature cycle is slightly lower during the first half of menstruation and higher after ovulation. Women in the first half of menstruation hormone levels are low, the body temperature will be at a slightly lower level, but with the advent of ovulation, the body’s hormone levels will rise, the hypothalamus thermoregulation center will cause some stimulation, then the basal body temperature will also rise, but the rise will not be particularly high, about only 0.3 to 0.5 ℃. After the end of ovulation, the body’s hormone level will still be high, so the basal body temperature will also remain high until the next menstrual period. In addition to hormone levels, a woman’s body temperature is also related to some other factors, such as viral infections, etc. It is also related to emotions and exercise, etc. It is not recommended to determine ovulation or pregnancy through body temperature changes. It is not recommended to determine ovulation or pregnancy through temperature changes. For specific cases, it is recommended to consult a medical professional.