I used to get thrush from time to time, but thankfully not while I've been pregnant.

I found that yogurt was good temporary relief, probably mostly because it was cold out of the fridge. But I had to use canesten to actually get rid of it.

I found that prevention was the best thing. Eating yeast didn't make a difference to me, but sugar did. The thrush would come back if I ate a lot of sugar. Eating yogurt everyday also helped.

Hope things clear up soon.