There is a possibility of pregnancy with a bit of semen on a woman’s panties, but the chances are small. A bit of semen on a woman’s panties, such as semen within the spermatozoa good vitality, at this time the ovulation of women wearing this panties, the sperm has a certain possibility through the vaginal opening of the woman into the vagina, resulting in the woman to get pregnant, so a bit of semen on a woman’s panties may also have the possibility of pregnancy. However, the chance of pregnancy in this case is very small. If a woman does not need to have children for the time being, she should pay attention to contraception during intercourse, should not wear underwear with semen, and can choose oral contraceptive pills, use a penis condom and other methods of contraception. If the patient has the need to use drugs, must be under the guidance of a professional physician, so as not to blindly use drugs, resulting in adverse consequences.