If you are having a problem with mucus and it is affecting your voice, maybe you need to look at what you are eating.
FOODS THAT CREATE MUCUS FOODS THAT ELIMINATE MUCUS
-corn
-corn oil
-milk
-cottage cheese
-yogurt
-syrup
-jams and jellies
-ice cream
-cookies
-butter
-cereals
-pies
-chips
-bread
-pretzels
-deep
-cake
-safflower and sunflower oil
-soy
-cauliflower
-garlic
-asparagus
-lemons
-celery
-bamboo shoots
-onions
-limes
-grapefruit
-green vegetables
-kumquats
-ginger
-oranges
-pineapple