For about 4 months I have been getting upper abdominal pain just below the breast bone and under the lower left rib. The pain tends to also be accompanied by a burning upper back, shoulders, and sometimes neck. I have been on Nexium for about 4 yrs., plus I use antacids when I must. The pain seems to come and go and lasts about 2 wks. Other symptoms I get is the constant urge to clear my throat and what can only be descibed as the feeling that I've swallowed a golf ball. Any ideas or anyone experiencing like????