Last monh (around may 20) I had just finished my period. I had sex shortly after ( probabaly about the 23rd). then in June, my period was a few days later than normal and now this month I still have yet to get it. I have not had sex since May and have not taken a pregnancy test. We had use a condom which I am pretty positive didnt break and I stopped taking birth control in March. I just need opinions on what might be going wrong and what i should do...