For right now you can go to the pharamcy and purchase some over the counter Vagisil to help with the itching. Here is some product info:
http://www.vagisil.com/
Make an appointment with your GYN for an exam and vaginal culture to determine if you have Trichomoniasis, a possible yeast infection or another STD.
Although vaginal yeast infections usually have a clumpy white "cottage-cheese" looking discharge, it also needs to be ruled out.