I have a bulge with pain under my right side of my ribcage that has been getting worse over time. The first time I noticed pain was after I twisted the wrong way, around a year & a half ago, & the muscle locked up so bad it brought me to my knees. I continue to have problems with both muscles under both sides under my ribcage locking up like a severe Charlie horse feeling. I do have severe endometriosis also. I've tried heavy duty pain meds but it didn't help at all. Yesterday I tried to see if Soma would help since flexeril didn't work at all & it actually stops the pain fully. Ive noticed that it hurts worse when I eat. I was in constant pain until I tried soma. Does anybody know what this may be? It's a bulge under my right side of my ribcage. My tummy is hard & destended from my endometriosis & I'm naseous almost every single day. If someone has an idea please help? Thanks...