What does a flare up feel like? (Not first)

I had what the GP thought was my first outbreak in March this year on one labia majora, never confirmed through swab or blood test (swab rejected as she used the wrong container). Never had anything like it before or since.
But now I have what feels like thrush- itching all over genitals, hot feeling vagina. No blisters and nothing visibly obvious. Iv taken a fluconazole tablet today, hoping it is thrush. Could this be an out break?