My last sexual encounters was July 3-7, during which my period started early (about 1 week). A week following my period finishing, I experienced PMS symptoms, but nothing else. Now I am experiencing strange spotting (for 6 days now) which began July 30, a couple of days before my period was supposed to start. I've been incredibly emotional & feeling yuck for about 2 weeks now. I am just wondering what the chances are that I may be pregnant?