Ok so my last period was 10/09, my husband and I had unprotected sex on the 10/22 which I guess was the beginning of my ovulation window I took a Plan b on 10/23. a few days ago I had some very light spotting and like 2 blood clots. could this be implantation bleeding meaning the palm b didn't work since I was ovulating or could it just be a side effect of the plan b itself??