When I've been on my feet for a bit I get a stitch like pain/discomfort down the right hand side of my lower abdomen. Doesn't hurt if I sand still, but when I walk it hurts. If I sit down and relax for 5 mins it goes away. May then stay away for a few hours or start again after about 10 minutes. Doesn't do it unless I'm walking around outside for a while. Anybody else had this??