Re: Pain/swollen feeling under left ribcage!
I think since it has been going on for awhile that you should see your Dr and make sure your spleen is not enlarged. The spleen breaks down blood cells, so a blood count would be helpful to do also. Sometimes pancreatic pain is felt on left, and pancreatic enzymes could be checked at same time. Be sure to tell Dr any related symptoms that started at same time to get a full picture.