The body temperature on the day of ovulation is about 0.3 degrees down from the original basal body temperature, which is the lowest. When the corpus luteum is formed after ovulation, the body temperature will rise on the 2nd day, usually by 0.3 degrees-0.5 degrees on top of the original base, usually above 36.8 degrees, with the vast majority at around 37 degrees. This high temperature state normally lasts for about 12 days, when the corpus luteum gradually shrinks, the body temperature begins to fall, the body temperature drops within 24 hours will generally come to menstruation. If the high temperature period lasts for more than 15 days, it indicates the possibility of pregnancy. If the high temperature lasts for more than 15 days, it is recommended to buy early pregnancy test paper to detect whether you are already pregnant.