Asking for help

A couple wks ago before my period, after having sex, I went to use bathroom, and I wipe out light pink blood! Is that normal to do??? We are to to have a baby?!!!! Also on October, 7, glow said I was supposed to start, well I ended up start on the 6, only went from that night on 6, to the 8, of October. Only 3 days on a peoird. And it was from very light to nothing to heavy to light to stop bleeding for good. Plz help me !!!