So I am currently late on my period for this month and missed last month. I am on the pill but sometimes miss the exact same time everyday. I have been traveling a lot for school, been stressed over homework and extracurricular activities and have had a cold for the last few days. I was with a boy at the end of March a day or two before my period should have started. We did 69 and he finished in my mouth then rest for a while he put on a condom and I rode him for 3 min (maybe he went limp). so am I worried over nothing, could it just be the fact that I had sex that threw my cycle off, along with stress, is there anyway I could be pregnant, or something else I just want to know what's going on with my cycle. any help?