Hello dear
Warm  welcome to Healthcaremagic.com
I have evaluated your query in details  .
*  The 
indigestion  in relation with  intestine motility , 
gut flora disturbances 
    or  other  issue , where as  throat  lump  is  possible  upper  respiratory
    tract  infection giving  
adenoid  enlargement .
*  Guidelines for better  outcome
-  Continue PPI .
-  High fiber diet with bulk forming laxatives  help a lot .
-  Prefer  soft , light  diet  with  avoidance  of  oily , spicy , non veg stuffs .
-  Regular walking , exercises will play major  role .
-  Gargles  with  salted  lukewarm  water  added  peppermint  oil  3  times 
    a  day .
Hope this  will help  to clear your doubt   .
Wishing you fine recovery .
Always welcome for any further assistance anytime .
Regards  .