1.Menopause: if a person with regular menstruation has delayed menstruation for 10 days or more, pregnancy can be considered and should be diagnosed at the hospital in time; 2.Early pregnancy reaction: after 6 weeks of menopause, pregnant women will have early pregnancy reaction such as nausea, vomiting, weakness, drowsiness and acidity due to the change of hormone level in the body, and some patients will have emotional changes, and this symptom will last for about a month. 3, frequent urination: due to the pressure of the enlarged uterus on the bladder, pregnant women may experience an increase in the number of urination, but we must also exclude whether the frequency of urination is caused by urinary tract infection; 4, breast changes: in early pregnancy, pregnant women will feel breast pain, breast volume can gradually increase, there will also be nipple enlargement, nipple areola coloring deepening and other phenomena. In summary, if you have sex and have the above symptoms, it is likely that you are pregnant. A urine pregnancy test or blood HCG, along with ultrasound, can be performed to confirm the diagnosis. After pregnancy, you should take care of rest and keep warm, eat a healthy diet, and refrain from strenuous exercise and weight-bearing. In addition, you should not have sexual intercourse in early pregnancy, strictly stop smoking and drinking, and pay attention to regular maternity check-ups.