1. Menopause: The menstrual cycle is usually normal, but when you should have your period, you do not see it, i.e., you stop menstruating. This is a common sign of pregnancy. Of course, menstruation is not caused by high fever, severe anemia, tuberculosis, endocrine diseases, etc. 2.Early Pregnancy Reaction: Along with the menstrual period, the loss of appetite, paranoia, sour and spicy food, aversion to greasy food, morning sickness and vomiting, etc. usually appear about 6 weeks after the menopause, which is called early pregnancy reaction. Generally, it will disappear on its own in about 3 months. 3. Frequent urination: due to the enlargement of the uterus, the forward pressure and stimulation of the bladder, the feeling of bowel movement often occurs, which leads to an increase in the number of urination. Usually the uterus rises into the abdominal cavity after 12 weeks of pregnancy and the symptoms of frequent urination disappear. 4, breast swelling and coloring: after pregnancy, breasts are stimulated by estrogen, progesterone, growth hormone, etc., fat and glands gradually increase, and there is a sense of pressure and pain, nipple areola pigmentation, nipples are easily erected. After knowing the signs of pregnancy, if a woman shows the above signs, she should go to the hospital for a checkup to confirm whether she is pregnant or not. If a gynecological examination reveals that the vagina and cervix are soft and bluish, and the body of the uterus is larger and softer than normal, and then urine is taken for pregnancy reaction, if it is positive, pregnancy can be concluded. In addition, ultrasonography can help to make a definite diagnosis, and the gestational sac can usually be detected as early as 4-5 weeks of pregnancy. When pregnancy is confirmed and you plan to continue the pregnancy, you should take care of your pregnancy and prenatal checkups under the guidance of your doctor.