i recently had protected sex for the first time in 2 years on February 20th. I usually get my period at the end of every month leading into the next.  I have not had my period yet but I've had cramps, sore breasts & slight back pain. when I had sex there was a conform used & he did not ejaculate while we were having sex at all. I don't know why I don't have my period yet & I'm trying to avoid taking a pregnancy test. please advice me as to what is going on, I've been very stressed out over this & I feel like that's why I haven't gotten my period yet but I just need reassurance.