So currently recovering from an ER visit after an exacerbation and had a band of tightness across the sternum area of my chest. So it got me thinking that maybe what brought it on is I lifted too much and I think I pulled a rib. Also my back is sore so it maybe out of place. Thank goodness from X-rays I know nothing is broken. I was wondering if anybody else has had experience with this happening with an injury like this?