Hello dear , hi
Warm welcome to Healthcaremagic.com
I have evaluated your query thoroughly .
*  The chest issue is from  GERD ( which may be from 
chronic gastritis ,      
duodenitis  with  or  without  ulcer  of  stomach , duodenum ) .
*  Abdominal issue  is  again  combination  of  GERD  with  inflammatory
    condition of the bowel and hampered  gut  flora mechanics .
*  Recommendations  for better  recovery .
-  Get basic lab tests to find out deficiency of iron , vitamins , minerals .
-   Upper GI 
endoscopy  and  
colonoscopy  are  mandatory  with  ultrasound
     of  the  abdomen  &  pelvis .
-   Continue  dietary  management  as  currently  doing .
-  Regular intake of 
proton pump inhibitors (as 
omeprazole or 
pantoprazole)
    on  empty  stomach , pro biotics after meals  will give better  results . 
-   Avoid smoking , alcohol if using .
-  Avoid stress , anxiety .
-  Manage to have sound , regular sleep of 7 - 8 hours .
Hope this will help you .
Regards dear take  care .