Acute gastritis OR food poisoning?

Vomitted 5 times, diarrhea close to 20 times, fever, headache, abdominal pain since Sunday.

Paid a visit to the clinic at 3am (Monday morning).

Given a jap (of which the pain can still be felt).

Doctor was damn unfriendly & sarcastic. The medicine given was damn useless.

I think I lost a tremendous amount of weight too from my already thin frame....