You can’t have sex for 1 month after a spontaneous miscarriage. Premature sexual intercourse may lead to infection and even affect future pregnancies. Because of natural miscarriage, if the miscarriage is complete, normally the bleeding can be clean within half a month, although the bleeding is clean also can not have any sexual life, because the uterine opening has not been completely closed, the meconium or the attachment of the pregnancy capsule peeled off the uterine trauma has not been completely healed. Therefore, premature sexual intercourse may bring bacteria to the uterine cavity and even retrograde infection to the pelvic cavity, leading to endometritis and even pelvic inflammatory disease. The most serious ones may block the fallopian tubes or cause pelvic adhesions, both of which may affect future pregnancies. In addition, if there is residue after a natural abortion, it may always be dripping, and in this case the uterus needs to be cleared, and you should never have sex, otherwise the possibility of infection will also be greater.