Sounds like Costochondritis. It can hurt exactly like that and make you head to to the ER until after you have had it happen a few times and your Dr. finally tells you that is what it is.

I used to have horrible long lasting bout's of it until I started fusing with the ribs and the back, then it was a whole other bag of trick's like breathing instead.

Try a heating pad there when it happens or some ice to see which works best. Do your A.S. stretching in the doorway exercises and take a pain med if you need to. Are you on the NSD?


Pea
Diagnosed with A.S. 29 year's ago.
Diagnosed with Fibro 10 year's ago.
Remicade, Intrathecal Pain Pump 2013