So I am almost a week late for my period and I don't think it is going to come anytime soon. I have been around one of my friends a LOT this summer. Could my body possibly be trying to regulate itself so I have it the same time as her since we have been around each other? I have also started running 2 miles a day. Could that be a reason too? I am a virgin so there is NO possible way that I am preganant.