i had surgery on june 13 and the pain in my left shoulder was really the only pain i had also. i used a heating pad and that really seemed to help. it will get better with time. hope you feel better soon.
I too am having surgery tommorrow and like you I am nervous and excited. I tell myself that the pain from the surgery will only last a few days and the out come will be worth it. I hope everythings goes well with you.