Recently I have had a pain on the right side of my sternum right where my boob ends. I have a pectus excavatum. It is mild and manageable. It does press on my lungs and causes me to feel short of breath at times, but has never sent me to the hospital ( I also have asthma, which may be caused by it). I was wondering if I should go get the pain checked out though. It has been occurring everyday for the past couple of months now. P.S. I also crack my sternum, as well as the rest of my body. Can't sit still and feel jittery unless I do it.