Ive been having unprotected sex with my boyfriend since im on birth contol but ive missed my pill about twice this month and still had unprotected sex then i started my period on march 12th and i ended on the 18th and i wasn`t supose to be starting till the 20th that means i started way to early and after i ended my period 2 days later me and my boyfriend had unprotected sex again and that night i started bleeding a little then the next day i stopped and then again i started spotting and its already been 3 days since ive been spotting on and offbut its not my period since i already had it and this is different its much brighter than normal period blood. What could it be???