I'm 18 years old and was due my period on the 1st of September. I have an irregular cycle anyway but today is the 1st of October and still no period. On a night out I was with a guy I was touching him and he was touching me and I'm unsure whether he touched me again after touching his penis. I told him about it and he claims he didn't but I took an at home pregnancy test to be sure... it was negative. I have just started my final year in school and have been really stressed about it and my period! Should I be worried I am pregnant or just stop stressing? I have had no symptoms to suggest I am pregnant?