Thanks for writing your query.
After reading your symptoms I would suggest that you should get yourself investigated for the following:-
1. Blood sugar ( Fasting and PP)
3. Serum Amylase
4. Serum Lipase
6. Urine (Routine/Microscopic and Culture/Senstivity)
Reports of the above mentioned tests will help to know the exact cause of your symptoms.
I hope this is helpful to you.