I already asked about being pregnant. took 3 or 4 tests and they all came out negative. i took plan b, which seemed to work so i am almost ruling out pregnancy, but here are my symptoms. I had a late period, then when i got my period, the first day, it was extremely dark and clotty. It only lasted for about 3-4 days. I have been feeling very nausous and light headed with extreme headaches for about the last two days. also, i started cramping again and today, i noticed blood and thing it could be my period again. I have felt like throwing up all the time, havent eaten that much, and have only actually thrown up once, tonight. Are there any suggestions. i know that someone told me that this could be from plan b, but i took on June 24, which was about 80 hours and it is now july 13. Pregnancy still an option....the date of unprotected sex was june 20th...any help would be greatly appreciated!