Hi, thanks for using healthcare magic
Some persons can experience severe heart burn. The endoscopy
will let your doctors know if there is any damage to the lining of the esophagus
or stomach such as erosion or an ulcer.
may be related to the severe reflux disease
The pain in the upper back after working may be influenced by the type of work that you are doing . If work involves any activity that is placing stress
on the back then it is likely the cause of the pain.
The fact that it occurs in this setting means it is related to something in this environment.
I hope this helps