To me it appears that you are suffering from Chronic Gastritis and Reflux Oesophagitis. There also may be ulceration in your gasric part( Gastric ulcer.)
Following should help-
I have a KX-TG2730 pansonic cordless telephone. How do I activate caller ID facility on this. My service provider permits free caller Id on landline tele. And I have switched ON the tab of caller ID...