I'm i6 yrs old and had sex in late may and came on my period I had a short period early June. July I missed the whole month and August I only had a very little bleeding and it was very dark in July I had frequent headaches and my nose was bleeding 2 times a day my mom came on her period all the months but I have missed all 3 months I recently got very sick really had stomach pains to were I could not sleep very bad diarrhea vomiting everything I ate I took a pregnancy test came out negative I'm really scared can sombody help me:confused: :o :o

Time to go to the doctor. We can't diagnose you over the internet, only a professional face to face consultation with a doctor can get you the answer. Go to the doctor.

Good luck.

As mentioned, you should go see a doctor. It sounds like you probably are not pregnant though. Having periods after conception is very rare and, while never 100%, over the counter pregnancy tests are pretty accurate these days if you follow the directions correctly.

See a doctor... it sounds more nuerological to me... I'd go see one right away... it also could be a digestive problem too... you don't sound pregnant... so don't worry... Just go visit the doctor.