For the last two weeks I ve had a reoccuring sharp pain behind my right shoulder blade, especially during the evening. I am able to walk freely during the day and experiance no back pain. I ve been fatigued and my appetite is not great. The pain is sharp and comes on suddenly and is very severe, if I stay still and do not move it will subside. If I take a deep breath I get a pain behind my right shoulder but when I exhale it decreases. My right lower abdomen front and back has discomfort. It seems that I have more belching than usual, I ve been using antacids to help with digestion, and Tylenol for the pain, but it doesn t help that much. I had an ablation for afib a year ago, and am now in sinus rythym, I am on lysnipryl for my BP, and a daily aspirin, COQ10, fish oil, multivitamin, and D3. I have rhumatoid arthritis in my neck and shoulders.