I have some itching in vagina during pee and pee comes pale yellow,what should I do

You should consult your doctor.

Increase water intake to minimum 4 liters per day. Include dahi chhas and tender coconut water in ur daily diet. Clean the outer area with v wash and water. Maintain good hygiene of thise parts by changing the underwear 2 to 3 times a day and also aerate the area after each wash for 5 to 10 minutes.