So I had my period in July from the 17th to the 21st and I had unprotected sex on July 31st. After the unprotected sex I ate a plan b pill. About 5 days after taking the pill I starting having symptoms like bloating, feeling like I'm going to puke, cramps, and backaches. I have unprotected sex again on Aug 4th and the next day I saw spotting. For the most part my so called period is light spotting (not heavy) but when I first saw that I was bleeding, the blood was pink. I don't know if I'm on my period or if it was implantation. Can anyone help me?