Hello dear
Warm  welcome to Healthcaremagic.com
I have evaluated your query in details  .
*  There can be different issues behind this as - 
digestive enzyme problems
    - intestine flora mechanics alterations - motility related issues - others .
*  Primary guidelines for better outcome in 
indigestion Dietary  measures  to  be  considered  are  :
Drink plenty of liquids .
Consume  high fiber  diet  with  more  of  green  leafy  vegetables , whole  grains , cereals , legumes , pulses , organic  fresh  fruits .
Avoid  excess oil , ghee , butter , dairy  products , non veg stuffs till possible .
Life  style  modifications  to  be  considered   :
Regular  walking  , exercises  , YOGA  are  must .
Avoid prolong  fasting  , over eating .
Manage  timings  of  breakfast  , lunch  , dinners  till possible .
Chew  your  food  very  thoroughly .
Avoid  
stress , 
anxiety .
If  consuming  alcohol  , tobacco  in  any  form  has  to  be  stopped .
Manage to have  regular  sound  sleep of  7 - 8 hours .
Keep your  blood sugar , 
cholesterol , weight  under  control .
Medicinal  support  can  be  obtained  with  :
Bulk  forming  laxative  as  Isphaghula  husk  in  glass of   lukewarm  water  as  per advise  of  your  doctor .
Evaluation  in  form  of  necessary  
ultrasound  , 
colonoscopy  may  be  demand of time  according  to  the  response  to treatment  and  clinician  concern .
Hope this  will help you for sure   .
Wishing you fine recovery .
Welcome for any further  guidance .
Regards  .