Hello and thank you for sharing, I am very sympathetic about the pain you are experiencing, especially at such a young age. I have had, and continue to have, the type of pain you have described, with one big difference: much of mine started randomly moving from the left side of my chest, sometimes right in the middle, and now on the right side. I have gone to the ER several times and it is not a cardiovascular problem. This last ER visit I was diagnosed with PLEURODYNIA. If you look it up on Google there is very little information except a description of the pain as well as the common name DEVIL'S CLAWS because the pain can be so excruciating. It usually lasts 3-4, days when it is contagious, but can last up to three weeks and then it just disappears. Essentially, this is a virus that finds a home on the outside of your lungs; it can cause epidemics but there is very little research beyond that. I thought I would reach under by breast and tear it out - know what I mean! Certainly the stresses of life can be causal for pain and need attention. But when I opened Google and saw a picture of a young woman doubled over and clutching her breast I felt an enormous sense of relief that what I have was a medical condition! Now I can be accepting of the pain and give myself a break from self stress blame and being a medical detective! Wishing you a healthy life, Theres Gifford