My boyfriend and I were fooling around about 3 days ago (12/11). There was no direct penetration, but I am worried about pregnancy because we had zero form of protection. My last period was 11/22, but if I am stressed, during the month, my next period usually gets delayed, so I am afraid that I haven't ovulated yet at that time. My next period is due in about a week. Last night, I felt extremely dizzy and even threw up (I usually NEVER throw up). I have been experiencing cramping in my lower stomach. What are the chances I am pregnant?