Hurts to Lay Down Postpartum

Will be 6 weeks pp tomorrow… I have been sleeping in a reclined position ever since I came home from the hospital. I got in my bed last night for the first time last night and slept on my sides… well it hurt! I’m sore today on my left side all the way from my hip to my rib cage, down my leg and a little by my pubic bone and bikini area. Is this normal?? Or is it because I’ve slept pretty much sitting upright for a month?