I’m 19. My period has always been regular and roughly the same amount of days when I’m on birth control. I’ve learned what my period looks like, red and heavy the first 2 days, red and light the 3rd day and then brown and light the 4th day. However this period has been different, I went through all the stages of my period in 5 days and on the night of my 5th day there was no brown stuff coming out anymore so I had intercourse with my boyfriend. When I went into the bathroom about 2 hours after and I had bright red blood coming out of my vagina. This has never happened to me before. Is this normal? Or is something wrong?