I get really painful cramping under my ribs,ometimes feels like a knot comes up there, almost like a pregnant woman feels when her baby is moving or poking his knees in her ribs, but I am not pregnant, have had a hysterectomy.  It comes on when I bend or move in a certain way.
Hi and thanks for the query, Cramps arise from sustained contractions. This could be due to over stimulation of a muscle. At times, low amounts of specific ions like low calcium and magnesium could lead to cramps. Suggest you get a review from your primary care doctor. Kind regards