I have been experiencing mild to moderate pain on the right side of my upper abdomen behind my rib cage. It is usually more painful upon inhaling rather than exhaling. Also, it usually occurs while sitting, if I sit straight up it isnt as painful, but if I slouch while sitting it gets worse, painful always rather than just upon inhaling.
Hello user think it's a muscular pain in the muscles around ribs, which got stretched by bad posture and improper posture during watching T.V. You are advised to have some anti-inflammatory/pain meds to prevent pain and inflammation, and if it not relives in a day or two, you are advised to have Abdominal Ultrasonography Scan, to rule out any cause OD referred pain from liver, or other visceral organs. Hope my advice helped you. Regards Chat Doctor. 