So I last had my period July 8th and yesterday July 28th I lightly spotted dark red/brownish once. I'm not sure if because the night before he fingered me and I was a little sore after or if it's implantation bleeding. I have felt a little nauseous at work a few times this past week but if I don't get sleep that will do it to me. I've never had sex but me and my boyfriend have dry humped like him no clothes and me in my underwear, (he never came the few times we've done it). I've also had headaches this week but that could be lack of sleep. I was wondering if there is a chance of me being pregnant or if my period is just trying to regulate because I've been pretty stressed here recently. I don't think he fingered me any of these times that we did it and he didn't cum and he claims he didn't precum but I've read sometimes guys can't feel it.