This is going to sound gross (and it is
), but Apple Cider Vinegar is great for sore throats. I discovered this the last time I was sick with a sinus/sore throat thing.
I heated up a cup of water, then added a couple Tblsps of ACV, some fresh lemon, and a spoonful of honey. It helped my throat (and congestion) more than anything else I have ever tried.
I know the sore throat is probably the least of your worries right now, but that is the only tip I have.
ETA: One more thing -- although I haven't taken the time to look over it yet, I have this website saved in my favorites...it might be worth a browse