Thrush is yeast, and yes, it can be passed back and forth.
Aj
If you tested negative for HIv then you don't have HIV. I don't know anything about thrush so I can't go any further on this, sorry. Someone else should be able to help.
so i have thrush and tested hiv neg it should go away? Also if i have oral thrush and my kiss my partner she can get it too? We both should get treated at the same time?