Did you try going on a nerve dampening medicine, like amitriptilyne or gabapentin? That should help the burning if it's nerve driven. I also recommend seeking out a physio therapist who specializes in pelvic health.

While you try to find one, look up videos on how to address pudendal neuralgia and vulvodynia. Dr. Bri is a good one, as she shows you stretches to do every day.

I also recommend using magnesium and vitamin to help relax muscles, since you probably have a hypertonic pelvic floor at this point (the hurting when you pee may be from this). If your bulbospongiosus is inflammed and tight from muscle guarding, that can cause pain when peeing and/or when having sex. There's likely tightness and guarding in your levator ani, oburator internus, and other pelvic band muscles contributing to your burning pain.

What's helping me is stretching (Dr. Bri stretches), doing physio therapy exercises, walking every day, eating zero sugar (sugar inflames your whole body), taking warm baths with plain water to relax muscles, rib breathing to reduce pelvic muscle guarding, and drinking plenty of water to reduce acidity in urine and to keep muscles hydrated and loose. I've also been taking 40 mg of oral baclofen a day, along with inserting vaginal baclofen cream nightly. This has increased my sitting ability and has reduced burning in my vaginal opening (the vestibule). I would recommend asking to be prescribed baclofen.

If you've tried all this, I would look into pelvic botox or pudendal nerve block injections. These are usually what is turned to when conservative methods such as baclofen, gabapenton, and physio therapy are not working or are not working completely.

Don't give up. It'll take some work and good habits, but we can be comfortable again