I think Belle has covered things very well!

I wasn't aware there were special pessaries for it, but when I had stubborn thrush, the only thing that cleared it in the end was probiotic capsules... but I used them as pessaries rather than swallowed them.

I had thrush again while pregnant, and the canesten soothed it only while I used it, and the end of the treatment it was still itchy and sore - once again the probiotic capsules did the trick.

You should also ditch the soap, and rinsing the area with a warm water with salt and bicarb soda added should also give some relief (and I believe helps restore pH).

BW