Having sexual arousal can cause contractions, the degree of which may be weak. Generally, sexual excitement will lead to uterine contractions, which may be manifested as pelvic congestion during non-pregnancy and contractions during pregnancy, and pregnant women may have a feeling of uterine tightness and hardness, and in severe cases, there may be lower abdominal pain or even vaginal bleeding. Therefore, during pregnancy, pregnant women and their husbands should minimize sexual urges and activities to reduce uterine excitability, especially in early pregnancy before 12 weeks of gestation and late pregnancy after 28 weeks of gestation, excessive contractions will increase the risk of miscarriage and preterm delivery. Pregnancy in pregnancy 12-28 weeks during the general development of the fetus is more stable, pregnant women can be appropriate sexual life, be careful not to be excessively strong or frequent, if the contractions are more serious or bleeding phenomenon, you need to consult a doctor as soon as possible.