My boyfriend and I were grinding naked and he put his penis around my clitoris (no where near the vaginal canal). We are also both virgins. What is the possibility of becoming pregnant with precum ? Neither did he ejaculate what so ever but he did the night before. I have irregular periods and I don't know if I was ovulating or not but my period calendar says that I was fertile. I've also had a cyst on my ovary a couple months ago. I would just like to know the chances because I have been very worried. This happened Tuesday, July 17th.