hello i am 17, and i am on birth control as well, and i well i remember all of the times when i freaked out too. precum it is not able to get you pregnant, it is to clean the area so the sperm will not die of imperities like urine and to make it the right temp. so the sperm dont die on their way. if you are on the pill and you have unprotected sex all you have to worry about really is infection, cancers and stds. even if a guy says he has gone to the doctor and got tested he can have disease that only affects women and causes cancer. well i have been scared so maybe you can help me, i have stopped my pills over a year ago then started again, i took a pack that was expired, and well in july and june i had a period that lasted for a month and a week, it was black, then i dropped out i am guessing the times worth of my period and it was normal after that. but now again i have had my period for a month and it is the same color but it is slower, i have told my doctor and she says it is from not taking them then starting them, but the weird part is i dont have pain and i dont have all the symptoms of having my period. and i know i am not pregnant. i have no signs and i would have pain if i was. so can you help i am scared to death that it is cancer.