TMI: Yeast Infection

Okay this is my first yeast infection and I am too allergic to so many things found in lotions and creams to use over the counter stuff. I am literally in so much pain from this and have been trying to get a doctor's appointment for 3 days. Any idea on how to take away from the pain or the itching? I am going insane. I don't know what to do to make it stop. All I know is I am going to go crazy if I do not fix it somehow. Ttc isn't really an option when all the sudden it hurts to have sex. Any advice is appreciated.