Thanks for writing your query.
After reading your post, it seems that you are having Urinary Tract
It is good that your doctor hats started medicines.
I would suggest that you should get a Urine examination done(Routine/Microscopic and Culture/Sensitivity).
This will help to know the appropriate antibiotic for your infection.
You can take Domperidone
10 mg once a day for nausea along with an antacid
Also drink lots of pure water daily.
Avoid spicy foods.
I hope this is helpful to you.