I got my period on 11/18 it ended on 11/21 , My boyfriend cum inside of me while I was on my period then on 12/09 I bleed I thought it was my period but then again it was too soon I am not regular tho some months I don't even get my period but anyways the day I got my period I was on it for only 1 day , that has never happened to me before is that normal ? What could that mean ?