Went from just being cold to shivering - no, shuddering violently. Went from thinking the muscle aches were likely just weather related to being OMFG overwhelming. Have a fever. Am shuddering too much to talk, and my voice is but a croak (had to call Adam to find the thermometer).
So yah. Thinking this is likely the flu.
Warm bath, then I'll ensconce myself on the couch with the laptop, a stack of magazines and books, the heated blankie, a can of V8, and a glass of water.