I Have Been Having Very Red Areas On My Inner

I have been having very red areas on my inner labia and some itching and am a regular pool swimmer.
Can the regular exposure to chlorine be a cause. I was in a relationship a year ago with someone who had herpes but who took valtrex every day. I din't see ant lesions but of course am concerned that the symptoms could be due to that. Is there a way to differentiate yeast infection or vulvar thrush from herpes?