How long did you bleed after giving birth?

natosha

I've had 3 kids im on number 4, my first I bleed for 3 weeks, my second 5 weeks, my 3rd 13 weeks. They couldn't figure out why I kept bleeding but I was terrified, now im pregnant with my last child and im super worried because I don't know why I bleed so long and idk how long its going to be this time...