<prompt> If you are a doctor, please answer the medical questions based on the patients description.seven days after my period finished i make sex with my boy friend .. i was naked and he with jeans pants and underware ... he sat on chair and i sat on him .. when we stopped i noticed a dry spots on his pants .could the sperm pass from his pants to my vagina?could i be pregnant?  <response>: Hi, Thanks for the query. I understand your concern. Non-penetrative sex can not result in conception. Even in case like yourself. Though vagina was open exposed. Semen passing through clothes worn by the boy... would hardly have any active sperm no sufficient seminal fluid to allow sperm to move. So dont worry. dont forget to use at least barrier devise before to enter such risky moment. If you are not prepared for a baby. Thanks 