Heavy period PP

A

I was told that my first period would be extremely heavy and it was but I am 6 months postpartum and every period I’ve had so far has been pretty heavy. I used to have 4 day periods. And only the first day would be heavy bleeding. Now I bleed for 5 days and 4 out of the 5 days are heavy. Is this normal? Will it stay this way or go back to how it used to be? Does any of this cause concern and require me seeing the doctor?