4 months PP.

Ever since having my baby my uterus has been sore/tender. I went to my dr and she basically checked me and yup as soon as she felt my uterus good lord it hurt. She also gave me birth control pills since I stopped breastfeeding 2 weeks ago and my hormones have been all over the place. I can’t eat, I can’t sleep, or when I sleep I sleep too much. I don’t want to clean or do the dishes. Even changing my babies diaper just seems like it’s too much. I still haven’t started my period and I’m kinda stressing about that but oh well. Has anyone ever had any of these experiences being postpartum?