Thanks Phaedra, Adelaide and Nanc, I really appreciate you advice. I am calling my dr today, I actually have a list of drs to call today, but my endoscopy dr is one of them. I put a heating pad on last night but didn't sleep well. It helped a little but not alot. I didn't go to ER because I didn't want to wake my husband up and I didn't want to go sit in the hospital for hours because the pain did subside a bit. I will call my gastro dr today. I still have my appendixs but if that's on right side then I don't think it's that either. This pain radiates from my left side rib cage to my back left at the bottom of the rib cage. I have minute amount of endometriosis still in my stomach that my endo dr said to leave for now because it was so minute and to see him in two months. I told him I had pain am not sure if it's because of endo, rsd or something else. It's just so overwhelming. When does all this pain go away? I'm so sick of it. And I'm so tired. Anyway, thanks again for caring. I'm glad I have you all as friends. Sincerely, Renee.