There are many similar sensations in women’s body before pregnancy and menstruation, but there are also differences. 1. breasts: most women will experience breast swelling and pain in early pregnancy, because after the fertilized egg is laid, the hCG level in women’s body grows rapidly, and the breasts will become bigger because of the preparation for breastfeeding, and the nipples and areolas become darker. The pain will gradually disappear after the onset of menstruation. 2. Uterus: After the fertilized egg is laid in the endometrium, the uterine cavity will be enlarged and there will be a slight contraction of the endometrium, and some pregnant women will feel a slight pain in the lower abdomen as a result. Before the onset of menstruation, women will have the feeling of uterine distension and cramping, which basically disappears in the middle of menstruation, and the pain will last until the end of menstruation for some women. 3. Most women have changes in taste before menstruation, such as wanting to eat spicy food, but this feeling gradually disappears after the onset of menstruation; 4, emotions: most women have early pregnancy symptoms such as mental sleepiness, nausea and vomiting, weakness and headache in early pregnancy, coupled with the increase in body temperature during early pregnancy, resulting in strong physical discomfort and mood swings, it is recommended that family members accompany and guide them. Before menstruation, some women may feel irritable and anxious, which will be relieved in the middle of menstruation and usually return to normal after the end of menstruation.