I have been on Advair for about 5 months. It really controls my ...

I have been on Advair for about 5 months. It really controls my asthma symptoms well- I had wheezing with exercise and now can run without wheezing. However, I am losing my voice. I feel like I have to strain to speak and this leaves me out of breath, which is a problem since I teach 3rd grade for a living! I also have a chronically sore throat and a white coating on my tongue and throat, despite rinsing my mouth and brushing my tongue after using the Diskus. I am torn about what to do because I hate the asthma symptoms I had but I hate these side effects just as much!