My name is Stephanie, my 54 year old husband (Thom) has had a sharp pain that comes and goes, in his upper, central abdomen area. It has been occurring for 4 days now, off and on. The most comfortable position for him when he feels it coming on, is to lay on his back/side and pull his knees up a bit and lay them in the opposite direction. He has tried taking antacid with advil but it only sometimes helps. He thinks it is muscular , but I m not so sure. Thank you for your time.