Ok so ill try to get straight to the point.. I had sex With my boyfirend in August of '08 we had intercourse for about a minute and he was not even close to cuming he pulled out way before it was my first timw with him and ever since then I have been very paranoid I have even lost at least 10 pounds since August and its because my appetite has changed since I'm so scared . It is now the end of January its been at least 5 months since we did it and I still haven gained my weight back my concern is my periods since that August they have not been normal they have been 4 to 5 days and not as much blood and before August they were myb 6-7 days and the bleeding was more.. I have taken at least 15 hpt's all negative... could I be pregnant? What could be causing the shorter periods ? I am so frustrated and stressed out that I can't think straight . Can anybody explain what could be causing all of this!