It sounds a bit like pleurisy. I experience this pain in the same area that you are describing, and when leaning over or taking a deep breath the pain increases. I started getting it in cycles after my second son was born, and as it is a symptom of autoimmune disease (Lupus), I had myself tested many times for Lupus and always came up negative...keep in mind this was long before I started using iodine. I now seem to get this briefly when starting up Iodine supplementation again after an extended break from it, but it lasts maybe for a day, and is very mild. Being diligent with adding Celtic Sea Salt to my water and selenium supplementation seem to help me with this issue, so I am guessing it is a detox of some sort.