ok shoulder surgeirs now you are in my kinda world (i had a bankarts process on my right side in 2004. there are a couple of things that should be looked into. 1)ask for ct scan form lateral from the shoulder to the neck and then one down your injured arm. ooppss i probably totally should have asked is are your symptoms on the same side as your surgery...if so try to get step 1 done. if it is not it may be because of the time you were on your side during your surgery...lesslikely but possible and at least it will give you a place to start. back to number 1 if your ct scan shows no nerve damage. and nothing seems to hurt or help...hot or cold water, temperature of the air..a cool breeze, a hot sun. is the area sensitive to the touch, or can you put no fabric on the area. im only asking the question because while any doctor can order a ct scan if you tell him what you are looking for after you have the scan done you will need to see a Neurologist, PM&R,or a PM specialist. If you can find a team with multiple docs and knowledgeble staff to assist in treatment with a lot of PM patients. If not call your current doc and ask them to track one down for you.
you need to get a scan and into a pain related doc as quickly as possible.

when i had my surgery my rsd wasnt a problem but a week later i started to show symptoms so i had the ct scan and discovered that along with a dislocated shoulder i had dislocated my ulnar nerve that then sat locked up in a sling for 2 weeks...the end result a second surgery and a huge battle with CRPS