The first thing to look at is what the purpose of the ultrasound is. Generally, the ultrasound can detect the intrauterine gestational sac and fetal buds, and some of them can have fetal heartbeat in the first 6 weeks of pregnancy. However, if the fetal heart is not seen, there is no need to worry. This is because each woman’s menstrual cycle is different, so the time to find the fetal bud and fetal heart on ultrasound will also vary from person to person, so in order to avoid multiple ultrasounds in the early days, it is more ideal to check the ultrasound on the 50th day of pregnancy, because at this time most women with regular menstruation and a 30-day cycle can see the fetal bud and fetal heart when they do transvaginal ultrasound. Therefore, if a woman really wants to have a baby after pregnancy, but there is no obvious abdominal pain or vaginal bleeding, there is no need to check too early and she can go to the hospital for ultrasound directly after 50 days or 6-7 weeks of menopause; however, if there are signs such as abdominal pain or vaginal bleeding, it is still recommended to go to the hospital as soon as possible for ultrasound to exclude dangerous situations such as ectopic pregnancy. In the early stage of pregnancy, it is possible to consider checking blood beta-hCG to indirectly understand the growth and development of the embryo. Generally, you can buy early pregnancy test strips and check blood beta-hCG after pregnancy, and you can also check ultrasound directly to confirm pregnancy, but you must build a card to do a comprehensive examination at 12 weeks of pregnancy.