What could be the cause of the itching and irritation in pubic area?

First of all I have been with the same partner over eight years. In early March I used this powder call Vagisil. It was for odor and wetness protection in vaginal area. Less than two days later, I start to itch really badly. I stopped using the powder. It eventually wentawayy; the itching and irritation that is. Now for about a month now, I've been having this irritation that is in the folds between my thigh area of my privates. Then it moves to the top under my belly? I'm also having this sometimes creamy white discharge and sometimes light clear discharge. It has a funny smell. What could it be? I don't douche, just use Ivory soap down there. Any ladies have an idea what this irritation could be?