Hello,i Am A 30yr Old Female. Last Month , I

hello,i am a 30yr old female. Last month , i had gastroenteritis for which I got the treatment done but from past few days I am having frequent urination (after every 10 minutes, I feel the urge) and so I am scare to go out for long hours.There is also itching and burning sensation. Doctor suggested to take cital syrup but did not tell anything about what kind of diet I should take. Please guide me on the treatment and diet as this thing has really disturb my routine life.Thank you.