Mine is under the right lower rib. I just wonder eat causes it.

My pain starts under my right collarbone when I do too much. If I don’t listen to the collarbone pain & rest it spreads out over my shoulder and through inside to under my right shoulder blade, up my neck, down my right arm, towards my sternum , etc… the collarbone pain has pretty much been my daily companion since all this began with Extensive Acute Pulmonary Embolism a couple years ago., along with losing the ability to talk- not from lack of air - plenty of air just no sound or “ Mickey Mouse” voice.