My boyfriend came inside of me on the first day of my period. It was definitely not planned, I did not "let" him. Anyways, I am very concerned because my period did not come on last month at all. It is now the middle of the month so I'd say this happened on the 15th of may. But I haven't had a period since about the 19th, 2 months prior to this one, in March. So I'm afraid my cycle may be all the way thrown off. Can somebody tell me anything about what I could expect?