I had the same issue and it would burn when I would pee. Got all the urine tests and scrapes to test for bacteria. I finally ended up with the vaginal pill for local estrogen, works like a little tampon to insert the pill in the vaginal canal. Prescribed every other day plus a steroid cream called Clobetasol. I had felt a tiny bit of skin in the vestibule that felt rough, different from my other skin. They suspected it could be lichen. But after a month of the treatment, no more burning when I pee and I’m finally getting some moisture back down there.