I work for a pharmaceutical company that sells OC's (Birth Control). I would tell you that while you are at risk, many, many, many women do it. Your chances of getting anything are very very very slim. You are most at risk for Cervical Cancer but if you get yearly (or regular) Pap tests, you should be fine. Cervical Cancer is highly curable. Pick one woth a low dose of estrogen. Ortho Tri Cyclen-LO seems to be popular now. Mircette is a good one. Check out this site: http://www.oralcontraceptives.com/ And yes, cut down on your smoking.