Pre-cum contains a lower amount of sperm as discussed here, so its less likely to get you pregnant than a full ejaculate, but it does contain some sperm so it's still very possible. Always wear a condom, even when no orgasm is involved.As for pregnancy, the most likely time for conception is 7 to 14 days before menstruation, so there is a chance you will be pregnant. But it's not an exact science - every woman's menstual cycle is different and sperm can live inside the fallopian tubes for up to 7 days. So trying to avoid getting pregnant by having sex on certain days is useless. It's called the rhythm method, as suggested by the Vatican, and it's one of the worst and most unreliable contraception methods out there. So in short I would say yes, there is a chance you will get pregnant, please consult a sexual health clinic in your local area.