Hi Kam
You need to see a vulval pain specialist, not just a gynaecologist. (Or maybe you've done that already) In the meantime keep chemical nasties away from the area as much as poss. This means avoiding soaps, detergents (eg bubble baths), preservatives, artificial perfumes etc, synthetic underwear, (some people forego underwear & just wear a long skirt), sanitary protection with chemical fluid holding gels can also be a problem. Try Natracare unbleached cotton pads or tampons, or 'Moon cup' re-usable menstrual cup. Above all, don't use thrush creams. They either seem to cause vestibulodynia or, possibly, what's diagnosed as thrush is actually something else. If you think you have thrush get a swab taken before they try to treat it. If you need something soothing try cool plain yoghurt, pure aloe vera, Aveeno bath sachets (£££ but cheaper on prescription).
I suggest you make contact with the Vulval Pain Society through their website:
www.vulvalpainsociety.org
They can give you loads of further info re treatments / self help remedies and there are a couple of internet support groups they can put you in touch & they are very helpful.
All the best
Shirley