My boyfriend and I had sex about 6 days ago. We used a condom but I later took plan b the next morning because I though it ripped. Yesterday I when I went to the restroom after I cleaned myself. I noticed a light pink spotting on the toilet paper but didn't think much of it thinking it was just spotting. Today my boyfriend and I had sex again and this evening I noticed more. It has gotten heavier. Could this be a symptom or the plan B? A vaginal tear or anything else? Please help