Allison... long time no erm... type...Well, I seem to be getting one nasty bug after another lately...
My advice, is warm up excercises, (was told humming somewhere over the rainbow is a good one, as gets to most notes). And most of all rest... no shouting, and hot toddys... irish style... Hot water, brown sugar, lemon quarter with cloves jabbed in it and a drop o whisky, and sometimes a drop of honey... but here's my fave!
Brandy, port and lemon..... YUM! A lovely velvety drink that really coats yer throat.
Hmm I just notice a distinct common recipe in my above...
but would also strongly advise, exercise your vocal chords... I'm having a similar problem, I keep finding myself yodelling in mid song.
Can sympathise totally.. oh, and smokey places doesn't help...
(I have a case of sinusitus at the mo... any tips for that?)