I hardly ever get sick, but when I have a sore throat, I tie a kerchief around my neck to keep the area nice and warm, and drink plenty of hot water with lemon juice and hot herbal tea. If I feel that a head cold is starting, I use a Neti pot to flush my sinuses a few times a day, and this usually prevents it or, at the very least, mitigates it.

Sorry you're feelin' so rotten, and that your training schedule is gettin' so messed up, DRLski.