What Causes Vaginal Discharge And Sore Breasts After Sexual Intercourse?

My period ended about two weeks ago is that and last night I had sex with my boyfriend. A little rougher then normal and after I went pee when I whipped I had left over clear ejaculation along with some light to medium brown discharge. Today I have the same thing but only when I use the restroom.My period does not start till 18-19 of this month. However my last period was late and was extremely heavy and after my period I experienced very sore breasts for about three days. Any Ideas?