Respected user , Hi
Thanks for using Healthcaremagic.com
I have evaluated your query thoroughly .
* This is in relation with 
gastritis and residual systemic effect of phenyl 
   intake 
* This wears off within next 24 - 48 hrs , for better recovery suggestions
-  Continue plenty of liquids .
-  Soft , light diet at intervals .
-  Cap.
omeprazole ( 20 ) mg with sips of water 2 times a day , no oral 
   intake for next 1 hr after that .
-  Tab. 
Tylenol ( 500 ) mg morning and evening after meals .
-  Avoid oily , spicy stuffs .
-  Remain ambulatory with  regular walking , exercises , 
YOGA -  Consult ER if this persist beyond 24 hrs .
Hope this clears your query .
Welcome for further doubts .
Regards .