If the basal body temperature is between 36.9-37.2℃ for more than 21 consecutive days during the preparation period, and there is a delay in menstruation, the chances of pregnancy are higher. If the temperature is measured after exercise or after drinking or eating, the temperature may be high, this situation is not accurate, during the preparation for pregnancy to monitor the basal body temperature, every morning before getting up to measure the temperature, the check is accurate. If there is a delay in menstruation, you can use pregnancy test paper or pregnancy test stick test, or direct blood test chorionic gonadotropin, to determine the pregnancy usually pay attention to rest, avoid strenuous exercise, maintain perineal hygiene, found that bacterial vaginosis timely treatment. If you suffer from bacterial vaginitis during pregnancy, it may cause miscarriage or preterm labor, and you should not have intercourse within 3 months of early pregnancy, otherwise it may cause miscarriage. If the body temperature exceeds 37.5℃, it is not necessarily caused by pregnancy, it may be caused by other reasons need to go to the hospital for examination.