Period or off/on bleeding?

Br

I'm 4 weeks pp and at the beginning of this week I started bleeding again and have been cramping pretty badly. Not only that but my face has broken out, typical period symptoms. Is this my period or just my hormones trying to go back to normal?

The bleeding hasn't been heavy. It's actually been rather light and consistent with cramping. Before I was pregnant my periods were severe bleeding and pain, so that's why I'm confused.