The uterus is more stable in the middle of pregnancy, and sex or masturbation at this time has no effect on the fetus. On the contrary, appropriate sex or masturbation can relieve the pregnant woman’s sexual needs and prevent her from overly repressing herself. However, if there is pre-eclampsia or low placenta, try not to have masturbation because masturbation can cause orgasm, which can cause slight stimulation to the uterus. If everything is normal for the pregnant woman, such contractions will not cause a miscarriage. If there is already a miscarriage or a low placenta, the slight contraction may aggravate the miscarriage or cause bleeding from the lower edge of the placenta.