Sharp pain(as if something like pin is hitting me)near left side of navel(happened yesterday night,did not subside after passing stools)today morning sudden pain(sensation we get when we put our finger in clip)for few seconds,then had gurgling noise in upper abdomen and then it subsided...also pain in chest and back {in one particular portion only,not in full chest}(as if hitting it with something)..also I feel some movements near upper abdomen navel which comes and goes...what might be the reason?is it acidity?I follow lifestyle changes so that i dont get acidity but what is the cause??kindly answer..