Hi.
Thanks for your query.
Noted the history and understood the concerns.
The symptoms when suggestive of food
poisoning means there is a possibility of intestinal infection that might have remained so as you might not have taken proper treatment.
Hence has caused you headache,
body ache and other symptoms.
I would advise you the following in such a situation:
Clinical evaluation by a Doctor, investigations of blood including for typhoid,
blood culture and sensitivity many a times help a lot; investigations of urine, stool,
ultrasonography of abdomen and any others as advised.
This will give a proper diagnosis and a plan of management.
You may also need a CT scan of the head for headache to rule out any brain pathology.
Once a proper cause is found it will be a guided management.
Take plenty of oral fluids, healthy diet, multivitamins and take
bed rest.