I thought this pain was due to breastfeeding initially but I stopped BF ages ago and it`s now nearly a year since the pain started- after giving birth I think. I cant pin point a point of injury but who knows it could have been due to a trauma.It hurts the most when I turn over in bed and when i get out of breath after walking briskly or running. Even the doctors are baffled.Does anyone have any experience of this?