Hello dear
Warm  welcome to Healthcaremagic.com
I have evaluated your query in details  .
* Intestine infection most likely .
* Primary guidelines for better outcome
Consume plenty of liquids  in form of boiled water , lemon juice , coconut water , home made juices , organic  tea , coffee , butter  milk  etc .
Prefer soft , light  , bland , vegan  diet  with fresh  curd  preferably .
Avoid  all types of  oily , spicy , non veg , hot beverages , junk foods , dairy fat , milk  , aerated drinks  till recovery .
Intake of PPI  ( as 
omeprazole ) , antibiotics  ( with 
metronidazole on pack ) 
Racecadrotil as an anti secretory agent , antispasmodic  agent as 
dicyclomine help faster recovery , which requires prescription with your doctor .
Wishing you fine recovery .
Feel free to ask any further  queries .
Regards  .
Dr. Bhagyesh ( MS , FMAS - consultant surgeon )