Any advice?

I'm currently 33weeks pregnant & have just made a doctors appointment due to believing I have a yeast infection. It does not smell, but occasionally itches on and off, and discharge is abnormal (sorry TMI). What will they do (take my word for it after describing my symptoms, or do an internal exam?) What can I take while pregnant? (I already eat natural yoghurt etc). I don't really wanna have some random doctor looking up there when I have this unpleasant problem (couldn't get into my normal doctor - also I know I'm pregnant and people will look up there later anyways but it's different when I know I have an infection, I'm not usually self conscious!) 
​Anyone?