First of all, if the pregnancy test is positive and there is no discomfort, you can go to the hospital for an ultrasound examination on the first day of the last menstrual period for about 42 days to determine whether the pregnancy is intrauterine or ectopic, and to determine the development of the gestational sac. If there is abdominal pain or bleeding during the observation period, there is no time limit, and you can go to the hospital at any time to have a blood test for progesterone and hCG to determine whether the fetus is stable or not, and you can take oral medication to protect the fetus according to the situation. If you do not have any discomfort, you can go for the test at the normal time. After the first examination, the second examination should be conducted at the 50th day of pregnancy as far as possible, to determine whether there is a fetal heartbeat and fetal bud, and if it is certain that there is, pay attention to the various examinations in the second trimester.