welcome to healthcare magic,
from the description of the symptoms you could be suffering from hyperacidity
you need to get your stool checked for a normal infection and also h-pylori
you should also get a normal blood test
done to rule out food poisoning
i would recommend take some antiacids and antispasmodics to relieve the pain.
would suggest get the test done to know what is wrong.
hope to have answered your query
wish you a quick recovery.