Slight bleeding during intercourse in the 2nd month of pregnancy may be due to excessive force during intercourse, preterm miscarriage or cervical disease. It is recommended not to have intercourse in the 2nd month of pregnancy because the fetus is not very stable during this period and intercourse may affect the development and health of the fetus. If you have bleeding after intercourse in the second month of pregnancy, it is recommended that you go to the hospital for examination and, if necessary, treatment under the guidance of a doctor.1. Excessive force: If you exert excessive force during intercourse in early pregnancy, it may stimulate the blood vessels of the cervix or vaginal wall and cause bleeding. After bleeding, stop intercourse immediately and rest in bed, the bleeding will gradually decrease or stop after about 3-7 days. 2. Pre-eclampsia: the fetus is not stable in the second month of pregnancy, intercourse may induce contractions and lead to pre-eclampsia. If the fetus develops normally after the examination, it is recommended to rest in bed and not to have intercourse, and if necessary, to be hospitalized and actively cooperate with the treatment to keep the fetus. If the fetal development is seriously affected, it is necessary to determine whether the pregnancy needs to be terminated; 3. Cervical diseases: cervical diseases may lead to contact bleeding, such as cervical polyps, cervical erosion, cervical cancer and so on. It needs to be diagnosed through relevant examination and actively treated according to the doctor’s recommendation.