Whether or not you can have normal sex at 12 weeks pregnant means whether or not you can have normal sex, as long as there are no other abnormal manifestations, you can have normal sex. Under normal circumstances, 12 weeks of pregnancy is usually refers to the third month of pregnancy, the embryo has been stabilized, if there is no abnormal performance, you can have sex, but should limit the number of times of sexual life, to avoid too frequent, and do not use too much force during sex. Before and after intercourse should also pay attention to physiological hygiene, wash the vulva, keep the vulva clean, if after intercourse there are some obvious discomfort, such as abdominal pain, mild bleeding, there may be abnormalities, it is recommended to consult a doctor in time for examination and treatment, to avoid adverse effects.