The first symptom of early pregnancy is the symptoms. The first symptom is menopause, which means that if the menstrual period does not come for more than one menstrual cycle, you should pay attention to whether you are pregnant or not. Some people may experience dizziness, fatigue, nausea, vomiting and other reactions in early pregnancy, if these symptoms are combined, you should also pay attention to whether you are pregnant. As an auxiliary test, you can test for pregnancy by purchasing a urine HCG test at an outside pharmacy. If two horizontal bars appear at the same time, pregnancy is very likely and needs to be further confirmed at the hospital. There are two main tests at the hospital: the first is to draw blood to check the HCG level in the blood, and if the value exceeds the normal level for a non-pregnant baby, the possibility of pregnancy is high. The second is the ultrasound, but the typical gestational sac may not be visible in the early stages of pregnancy, and it is usually necessary to see the gestational sac under the vaginal ultrasound after 35-42 days of menopause, that is, after 5-6 weeks of menopause, in order to determine whether the pregnancy is intrauterine.