You poor thing, I do so understand your pain. I have had this condition for a number of years. For me the only way I get relief is to have steroid injections into my ribs. They are uncomfortable to have done, but worth it as they really do the trick.
Mine was so very severe that I was like you in constant pain, and this was the option that was finally decided for me.
Maybe it's worth you speaking to your doctor about if you are in such a lot of pain.
I hope things improve for you soon.