I had sex during my 2nd day of period (march'08), a month after i had my period again (april 19-22) then may I was supposed to have my period but i didn't. Instead, I had a spot. Lately, I've been feeling nauseous, have cramps, and a beating in my lower abdomen. Is there a possibility that I am pregnant? Also, I'm in a major stresse right now, which is which. please help