John C.Wish I could give you better advice, I'm just getting over a godawful cold. You seem to be at the one point where I do actually resort to a small amount, never the full dose of any kind of decongestant just so I can get to sleep and then I know tomorrow my nose won't be running so badly. For a throat as sore as that I try and keep my place reasonably humid and also sip ice water or anthing cold enough to reduce some swelling, it makes me a little more comfortable. If its cold outside try taking deep breaths of cool air.
Good luck and hope you get better soon.
Sophocleese