Period for only 2 days?!?

Hi guys I'm 13 and have a problem. I started my period for the first time 2 days ago right? my first day it was heavy and then the next day it was heavy too. but at night and during dinner i barely had any blood but i still had some. this morning i check my over night pad, and theres barely anything there! idk what to do so if you guys could help me figure this out, that would be great:))