Hi,Iv been having a stitch like pain in the upper part of the stomach just below the rib cage on the right hand side for a few days now,I believe its something to do with the fact that I have been exercising 4 days a week boxing training,Iv been doing that for about a month now and previous to that I haven t done any real intense exercise for a number of years,its very physical,the stitch started the other night and its just a constant pain at the moment,can you help please,thank you