My fiance is a marine. He graduated and recieved leave the whole month of december. We had alot of unprotected sex. for the most part he pulled out. I thought that I was definately pregnant due to several symptoms but i ended up starting my period although it was weird. we continued to still have sex on it and it did not hurt or make my vagina feel raw like a normal period does so it felt like i was just bleeding. soon after i started to have a tremendous amount of discharge, it's very watery and thin, my fiance actually stated one time that i was oozin. I have had heartburn, nauseau, vomitting, extremely sore nipples, i even have tiny wholes in my nipples that i have never noticed before. i took several hpts and they came up negative. we continued to have sex until he left. at about 6 days after he left i started to spot some brown stuff. very similar to when i'm about to start my period. i figured that's what it was because it usually starts out that way and gets heavier but the spotting stopped within a day and a half. i was supposed to start my real period today but i havent. i went to the dr yesterday for an annual check up and the unrine test came back negative. my good friend who just had a baby told me that none of her hpts came back positive until she was three months pregnant. is it possible that i could still be pregnant even though they have all said negative?