Suggest Natural Remedies To Prevent Pregnancy

I am currently having a possible pregnancy scare. My boyfriend and I have not had complete intercourse yet. So, technically I am still a Virgin. Last night things got a little out of a hand, and we were not using protection. He pulled out before orgasm, but that doesn't neccesarily mean that will protect me from getting pregnant. I do not want to take the morning after pill, but would rather possibly take an alternative route. I have been looking at some answers for herbal ways to stop pregnancy. Ginger tea seems like the best option, but I am wondering if my chances of getting pregnant are low, and also if I can take something more natural to make sure I don't get pregnant.