Ok, so my periods have always been weird. Sometimes they can be 17 days apart, normally(I count from the day after my last day of one to the day before I get it again) or in one case, 4, and twice I have waited 32 and 37 days for it. I just almost had sex with my boyfriend. We did not have intercourse but we almost did anal and Im worried that some sperm got on my vaginal opening. How do I tell if I'm pregnant or not, this happened yesterday? If I do get my period on one of the longer waiting times, it would be sometime next week. I know I sound silly but I would love some answers. Bc we didn't have intercourse or attempt it we did not have condoms in use and I'm not on birth control