Thanks for writing your query.
After reading your post, it seems that you are having infection in your gastrointestinal tract and needs medical attention.
You should get following investigations done :-
2. Liver Function Test(LFT).
You should take antacid
20 mg along with Domperidone
Mefenemic acid along with dicycloverine
will help in relief of pain in the abdomen.
Metronidiazole 400 mg thrice a day along with Ciprofloxacinb 500 mg twice a day will help in controlling the infection. you should also take a probiotic
preparation along with the above medication.
Your symptoms are not suggestive of worms. Anyway, there is no need to add water to the zentel syrup.
You should take care of your diet. Food should be prepared in hygeinic conditions. Drink pure water only.
If the problem persists, get yourself examined clinically.
I hope this is helpful to you.