The body temperature will be high before menstruation, but only slightly elevated, usually not more than 37.2°C. There is no need to worry too much. If the menstrual cycle is relatively regular and the woman has normal ovulation, the progesterone level in the body generally rises after ovulation, which has a certain effect on the thermoregulatory center of the brain, causing a slight increase in body temperature that can last for about 13 days until just before the onset of menstruation. During the period of 3-5 days after the hormone level drops, the endometrium loses its hormonal support and the endometrial lining peels off, and menstruation occurs. This increase in body temperature is a normal physiological condition and does not require much treatment. If it lasts for a shorter period of time, less than 12 days, it may be caused by luteal insufficiency and can lead to shortened menstrual cycles or even infertility, which requires luteal function to be determined and treated. In some women, a rise in body temperature of more than 37.5℃ and uncomfortable reactions such as coughing and weakness may be caused by cold, at this time, you can take some medicines for cold to improve the uncomfortable symptoms. Pay attention to ensure sufficient rest in life and improve physical fitness, which is conducive to physical recovery.