Cyn,
Sounds like you have a few things going on and I would encourage you to go to urgent care as soon as you can. The itching and not breathing well are related to allergy and benedryl was the right thing to do (I'm an immunologist). Next thing is to get the answers to the "spot". I'm not sure if you have a gall bladder, but that is a common place to have pain for it. Again, I strongly encourage you to go to a doc. Tis not the time for forum diagnosis or self-diagnosis. *hugs* Please let us know what the doc says
lotsa luv,
Ratkity