How do you tell if your yeast infection is gone if you have no symptoms?

I went to the hospital for what I thought was leaking fluid (very watery, enough to run down my legs and drip on the floor) but when they checked they said it wasn't fluid and that I had a lot of thick white discharge near my cervix and that I tested positive for a yeast infection. But I didn't and still don't have any itching, burning, odor, or anything. And not much discharge ever comes out. They gave me the cream to use and told me to use it for 3 days and that if it wasn't cleared up that I'd have to get an oral medication....but I don't know if it's cleared up or not since I never had any symptoms in the first place. How can I tell if it's gone?