I got my period on Saturday and I had sex the first two days of my period because my bf was in town. After I felt sore and I figured it was because of the sex but then I started getting itchy.. I'm currently on the 4th day of my period and it hurts and itches right outside of my vagina. It doesn't hurt to pee or anything because the uncomfortable feeling isn't inside the vagina it's outside & im really worried it's something serious..