Pain in bum after birth

Has anyone experienced muscular pain in the bum after giving birth? I had a normal vaginal delivery and about 1 week after giving birth, I’ve had an unusual pain in my bum, that causes me discomfort when I sit up, get in and out of bed and I can’t seem to understand why? I have no other symptoms, just this muscular pain which I’ll call the drs about. Was wondering if anyone went through anything similar