Masturbation is usually not recommended for women in early pregnancy. If a woman masturbates during early pregnancy or has sex without paying attention to hygiene, it may cause bacterial vaginosis or trichomonas vaginitis, acute cervical inflammation and so on. All of these diseases, if not treated in time, may be detrimental to pregnancy, such as may cause premature rupture of membranes, miscarriage, preterm labor, chorioamnionitis, and so on. When a woman masturbates or has sex, she may have an orgasm due to sexual stimulation. The uterus will contract when a woman has an orgasm, and if uterine contractions occur in early pregnancy, it may lead to the occurrence of preterm labor or miscarriage. If you have already masturbated in early pregnancy, but no abnormalities have occurred, there is no need to worry too much, just pay attention to observation.