It's been almost two months while sitting I developed a pain in between the low rib area close to sternum  with skin becoming sore and there is a swelling in that region.There was a kind fluttering in that area and the pain suddenly started.It was a severe pain.I took some pain killers ,there was no relief. Refered to doctors but some say it is a muscle strain and some gastritis.Got my all test done pertaining to heart disease all found negative.pl adivce to what is the problem and the treatment. Rgds.