Hello dear , hi
Welcome to Healthcaremagic.com
I have evaluated your query thoroughly .
*  This is in relation with 
acute gastritis  with  food 
poisoning .
*  Guidelines for better  recovery at present  
-  Drink more liquids in sessions .
-  Prefer soft , light diet .
-  Avoid oily , spicy , non veg stuffs , hot beverages , junk foods .
-  Intake of 
proton pump inhibitor  as  
omeprazole ( 20 ) mg with sips of
    water  morning  and evening  before  meals  help a lot .
-  Avoid stress , 
anxiety .
-  Manage to have regular sound sleep of 8 hours .
-  Avoid smoking , alcohol if using .
Hope this will help you for  sure .
Wishing you fine health ahead .
Regards dear take care .