first off, are you sure your boyfriend put the condom on right. i know condoms can break. i was with my ex for 5 years and we always used condoms and it never tore.
make sure he pinched the tip of it taking all the air out of it. some condom boxes (even the 3 in a box) has pictures and a description on how to put it on.
second, you can go to the doctor, but it has be after you missed your period, or you will be wasting your time.
birth control pills are very small, if you put it in your mouth and drink water it will slide down with no problem.
my question to you is what if you are pregnant what will you do? if your answer is you dont know, then you should use birth control.