Late once again

At this point i think my period is irregular now. But but it doesn't make sense because my period used to be regular. But anyway i missed my period for a month. February to march. And then no period for all of April and so far not may either....but i had sex with my boyfriend 2. The first which was the begining of the month. i think his precum went through the condom before we realized it was ripped. The second time we didnt use a condom but we stopped like 2 mintues before he finished.

Any thoughts?