I meant just underwear - no jeans. We had unprotected sex for the first time. Related 1. We've told you the "textbook" version of how most women's bodies work, not everyone's. Cervical caps should be used with spermicidal cream or jelly. Also would not allow the sperm to travel through. Planned Parenthood Federation of America, Inc. Click here to get CPS posters. That's when your body starts making new hormones and responding. Oil-based lubricants cannot be used with latex condoms. Very Low Chance of Pregnancy He ejaculated but we were both wearing thick clothing. However, any time the penis comes in contact with the vagina, there is a possibility of pregnancy. We slept in the same bed but did not do anything sexual. Once you miss a period, there's no reason to wait to get a pregnancy test. Additionally, the withdrawal method requires a lot of discipline because many males prefer ejaculating inside their partners vagina. Join the conversation!