If a girl is pregnant, the most common clinical signs are as follows: 1. A history of menopause. If you usually have normal periods, have normal sex life, and do not use contraception, and suddenly experience menopause, you may be pregnant. 2. After menopause, there will be corresponding symptoms, such as anorexia, salivation, nausea and vomiting when you get up in the morning. There may also be localized swelling and pain in the breasts, or the phenomenon of breast enlargement, nipple and areola coloring, and relatively sensitive nipples, which are signs of pregnancy. Therefore, once these reactions occur, it is recommended to collect the morning urine and do an early pregnancy test, and if two red lines of the same color appear, you are pregnant.