oh i hate strep! if it's not strep, or even if it is--try to get Slippery Elm lozenges. they're the best. i hope your show goes well and i so wish i could see it for myself.
your process is invaluable...but for your throat, try arnica montana 30 ch (5 granules)...then four hours later, hypericum perforatum, 30 ch (5 granules). Keep alternating every four hours. In a few days you will be just fine...