Is my yeast infection gone yet?

I'm 18 weeks - Two weeks ago my OB diagnosed me with a yeast infection (my first ever) and I did a 7-day course of terconazole.  
The itching is gone, but I still have a bit of yellow discharge.  No real smell though.  
Since I've never had a yeast infection before, and since discharge is different during pregnancy anyways, how can I tell if it's really gone?