im 19 years old and im sexually active and i have not used a condom in 2 months and i am not on birth control. i have been spotting for days..today is the 9th day it is a little bit of blood each day...its like brown. i have not gotten my period..last month i got my period on the 31st this month i started light spotting on the 20th and i still am..i was scared and took a PT...i am not pregnant..whats going on with me????? please help im so scared