okay, i had sex for my first time about three weeks ago. I used a condom and since it was my first time he didnt even come close to cuming. im pretty sure it was after i ovulated, i think right after. he then proceeded to take the condom off and fill it with water to prove to me there werent holes cuz i was freaking out kind of. well the past month i've been running about every day or every other day on the ellyptical about 3 to four miles and i dance about 4 days a week. I went down in my bmi from about 25 to like 19.2 in the past month and lost about 3 or 4 pounds. I am now about 6 days late on my period, do you think i need to worry about pregnancy or is it simply my body? please im making myself sick over this.