Bloody Mucous Before Period Abnormal Menstrual Bleeding?

Abnormal Menstrual Bleeding? - bloody mucous before period

I'm freaking a little, but I go for the Pap test Friday with my doctor (before I could get). I had abnormal periods for some time, but I wonder what happened. Two weeks ago I had my usual rules. It was dark for five full days. What I had protected sex with my boyfriend. 2 days later I was a little shocked angry. I had a yeast infection before and assumed that what it was. I have the treatment of yeast infection yesterday and today I am with bloody mucus. It did not smell so I have no idea what happened. I also had pain in my right breast. I know it's a long shot, but any suggestions? Friday can not come soon.