Well...

About two weeks ago I fooled around with my boyfriend. We didn't have sex, but he wore a condom most of the time, just to keep things clean. Well..My breasts started to hurt about a week after we messed around. That usually happens before my period...But i'm always early, by anywhere from 4-2 days. Not this time. Tomorrow i'm due (the 5th) and the only traces of blood i've had are a barely noticeable ammount on the tampon. I thought maybe I got my period last night, but today there is nothing..Just the dot of blood on the tampon. Could this maybe be like the start of my period, it takes a few days to kick in? I'm scared a little here, I dont think i'm pregnant, and I dont think any of my boyfriends stuff got near me, but why would I be having these little barely noticeable traces of blood. Has anyone else ever had this? Any help would be appreciated. Thanks

jen