The increase in vaginal discharge after intercourse is not necessarily a sign of pregnancy. After intercourse, semen is ejaculated into the posterior fornix, and vaginal secretions increase during intercourse, and the mixture of the two leads to an increase in secretions, so it is recommended to keep the area clean. If you have intercourse during ovulation, even if the sperm and egg have already combined to form a fertilized egg, the corresponding symptoms will not appear until after menopause. If there are signs of pregnancy and there is no increase in vaginal discharge before menstruation, it is possible that you are pregnant. The glands in the endometrium will not produce as much because of pregnancy, so if you are pregnant, the discharge will not increase before menstruation.