birth control pills are not 100% but they close. using a condom will increase the effectiveness for sure but it is a bit too late to worry about that now. i suspect your girlfriend is not pregnant which is probably good since her sexual partner (you) should have been more considerate and caring. you don't get pregnant my friend but your girlfriend can so let this be a learning experience for you. use condoms or postpone sexual activity until you are more responsible. maybe you want to be a dad i don't know. signed dad (not your dad but a dad)
effectiveness of birth control? . my girlfriend (18 years old) takes her pill exactly on time every single day (within 3 minutes of her 9:00pm time never any later). we have unprotected sex (we have already been tested and have no worry of stds) and i ejaculate inside of her. although she takes her pill exactly on time every single day is there a chance that she could become pregnant?