<s>[INST] I have been having alot of catching ,pain and discomfort under my right rib.  If I twist to either side especially my right it feels like my rib actually catches on something and at times I have to stop try to catch my breath and wait for it to subside.  There are times if I am laughing too hard that it will do the same thing but normally its more so if I have twisted or moved  a certain way [/INST] Hi thanks for asking question. Here you are complaining pain in particular position esp. While turning to a side. So strong possibility is about moderate degree muscular strain. It might have occurred by heavyweight lift or during some activities. Simple analgesic taken. Take rest. Sleep in supine position. Second here Costco Chat Doctor.  Ribs are tender to touch.x-ray also useful. If cough, cold, sore throat present then respiratory infections also has to be ruled out. Treat it symptomatically. If still seems serious then x-ray done for chest. CBC will also be done. If you have yellow sclera, right abdomen pain, anorexia then do your serum liver enzyme study for detecting liver pathology. Avoid stress as it can aggravate pain. I hope you will understand my concern. </s>