Vulva burning

I have had a burning sensation on my vulva for nine days now. From what I can tell there aren’t any sores . But my labia is red. There really isn’t any pain either, it doesn’t hurt to urinate, wipe, and nothing hurts. Every now and again I get the same burning sensation on my thighs. I have had this occur off and on since having my second baby a year ago and it usually occurs right before my period , typically after ovulation. Does this sound like herpes? I’ve never had these issues until after my second baby and I’m panicking and so anxious. Could it be something else? Please help?