Hi I am pretty new here but it sounds like you have a slight yeast infection. You should go to your dr. They can give you diflucan (a pill) which should clear it up in a few days.
If you don't want to go to the dr. I would recommend getting Monistat 7. Do not get the 1 day, or 3 day. Make sures its the 7 day (well night really since thats when you use it). I have read up on, used, and been told by drs. the other shorter treatments are not as effective and can make you cramp.
Most Monistats come with a little tube of stuff that will help with itching too.