Early pregnancy is an important time for the development of the embryo, the first maternity check is very important, you need to know the time and content of the first maternity check. First of all, the early pregnancy test should be divided into three steps: 1, determine the pregnancy: through the pregnancy test stick preliminary judgment. If the HCG is greater than the reference value on the checklist, you are definitely pregnant. 2, determine intrauterine pregnancy: for pregnant women with regular menstruation, the earliest time to determine intrauterine pregnancy is 35 days after menopause through vaginal ultrasound, remember this is the earliest time. If the ultrasound is done too early, it is possible that the gestational sac cannot be seen or only a very small vesicle can be seen, which is not very good, so the first ultrasound can be done on 40 – 42 days to determine intrauterine pregnancy. 3, to determine intrauterine live fetus: only live fetus is only meaningful. In the case of determining intrauterine pregnancy, determining intrauterine live fetus can be placed at about 60 days of menopause, a point in time when the presence or absence of fetal heart can be confirmed. In some cases, it is not necessary to perform ultrasound too early and repeatedly several times. The ultrasound time to determine a live intrauterine fetus can be extended appropriately, provided that intrauterine pregnancy is established. For some pregnant women, it may be coincidental that these three steps are done in one examination, so congratulations, easy and hassle-free. Some patients are these three steps in one step, and this is also possible. For some patients, the second and third steps are done together, which is also possible. But be sure to pay attention: the prerequisite for determining the time delay of the third step is to first determine intrauterine pregnancy. If multiple tests are performed and no gestational sac is found, be on high alert. At this time the flow can not follow the regular steps, it is necessary to review the test once in 3-5 days. The gestational sac is found as soon as possible. The first maternity test should be performed around 40 days after menopause (that is, counting from the first day of the last menstrual period), too early the gestational sac is not visible, too late it is easy to have an accident. If you are not uncomfortable, you can postpone it, but it is not advisable to postpone it for too long. The main purpose of the first maternity checkup: to understand the basic health status of the mother; to understand whether the fetus is developing well; and to check whether the mother’s pregnancy week is accurate. The first maternity checkup 1.the test to confirm pregnancy: blood test hcg, progesterone can be checked or not, and is not the main indicator. 2. routine physical examination: height, weight, blood pressure, heart rate, etc. The detection of basic weight at this time is of great significance for the monitoring of weight during the whole pregnancy. If you are overweight or overweight at this time, you should strictly control your weight during pregnancy. The first maternity checkup also includes blood routine, urine routine, liver function, kidney function and other checkups similar to physical examination. 3. Ultrasound examination: Ultrasound is used to understand the location and quality of the gestational sac. Under normal circumstances, the fertilized egg is laid, grows and develops on the endometrium of the uterus. If the gestational sac grows outside the uterus, such as in the fallopian tubes, ovaries or other parts of the abdominal cavity, it is an ectopic pregnancy. For pregnant women with irregular menstruation, the size of the gestational sac and germ measured by ultrasound can help to check the accuracy of the gestational week and also to know whether the fetus is in good condition. 4. Thyroid function check: Many pregnant women do not understand this, and think that the main reason why thyroid is checked during pregnancy is because thyroid function is important for the early development of the fetus. And the thyroid function indicators during pregnancy are different from those during non-pregnancy. Thyroid hormones have an important impact on adverse pregnancy outcomes such as embryonic implantation, decreased fertility, miscarriage, preterm delivery and even placental abruption.