Okay I am 15 years old and yes I know that is young. Me and my boyfriend had sex about a month ago and while were doing it we both thought we felt something kind of like the condom breaking (it was towards the very end of the sex). So he pulled out and he had ejaculated. He checked the condom and it did not look broken at all but we were both still scared so about a day and a half later I took plan b. my next period came about a week later and we thought everything was good. We only had sex about 3 more times from that point till my next period was supposed to start and he pulled every time and wore a condom and checked it after. I was supposed to get my period May 13th and now its May 21st. I have taken 4 pregnancy test during that time and they are all negative except I took one on the 21st and it came out a false reading for some reason. I really don't know what to do. I have no sings of pregnancy or anything I am just freaking out because my period is so late.

PLEASE GIVE ADVICE!

Pregnancy isn't the only thing that can make you miss a period. Stress can cause your cycle to become irregular. Or because plan b is basically a large dose or hormones even that can make your cycle off for a little bit. There's plenty of other things that can cause it too. So relax for now. What do you mean though that one of the tests was a false reading?