The increase in body temperature after ovulation does not mean that pregnancy is possible. Because normal women, if the menstrual cycle is normal, ovulation function is normal, first of all in the menstrual clean is low temperature, after ovulation by the influence of progesterone basal body temperature began to rise, in the luteal phase after the luteal gland atrophy, stop secretion of progesterone, the amount of progesterone is reduced, at this time no longer affects the thermoregulatory center, the body temperature returns to normal, in general, the high temperature to continue for about 12 days, indicating that the The luteal function is normal. If the high temperature lasts for 15 days, the possibility of pregnancy is relatively large, so the temperature rise after ovulation is a normal physiological phenomenon, does not mean that the possibility of pregnancy. Only when the basal body temperature rises for more than 15 days in a row can you be pregnant.