Go to the doctor to find out. My period was supposed to come in a week...but I spotted about 4-5 days ago. I don't know whats up with mine either. I took the morning after pill in less than 24 hrs of sex about 2-3 wks ago and tested negative twice. Anyone know what's goin on...? I've also been really stressed out and been on prescription drugs (Cephalexin and Bactrim)