i had unprotected sex, and then went to the pharmacy the very next day and picked up pregnancy tests and emergency contraceptive (plan b). I took both tests and they read positive but the lines weren't very clear. I took the emergency contraceptive anyway. A week later i still haven't gotten my period. I started to have menstrual like cramps yesterday but nothing major. Today they were pretty much the same. I went to use the bathroom and i was spotting. It turned from a pinkish color to red but not in excess. Kinda like you're about to start your period. Could it be implantation bleeding? or maybe just the stress causing me to miss my period or maybe plan b is messing with my cycle. PLEASE HELP!!!