Rib head out 3 months postpartum

Mommy of 💙💙💜

Hey just had my 3rd baby 3 months ago and i started feeling this pin like feeling on my left side on Tuesday and noticed one of my rib heads is out and between the rib is tender. I went to the er the did xray all seems normal so they gave me a dr. To follow up with. But my whole upper body just hurts. Has anyone else had this after pregnancy?