Help😩😐

So my period came on Sunday it usually only stay on for four days yay lucky me so last night after I shower & put on a clean pad & went to bed woke up there was no blood in the pad so I shower get dressed & put on another clean pad just incase discharge after period well it had been literally a couple hours after wearing the pad it was nothing there then boom blood went to the bathroom to use it & it stopped what does this mean ?