thanks to everyone for their input; I do believe it is the flu! My sister had something similar, so I have an appointment on thursday with the CF docs, so we'll see if I'm not better. and erin, I definately bunker down and try to be religious about my meds when I start to feel crappy, so lately I've been doing a good job, but I think you mention a great point -- taking a break from life. I think I just need to do such a thing, and really get back on track. =)
(And I am feeling better, slowly, but better.)