I've had similar sleepiness issues lately on the sinus front. At least i think that's what it is. Intense lethargy, followed by bursts of manic activity and sleeplessness. (Actually, I'm not really sure which comes first or whether there's a causal relationship between the two. Being wide awake and really tired sucks.) This seems to have hit just when I'd started working out again, too. Annoying.

But enough about me. (grin)

Just take a few days to let your meds sort themselves out. When feeling icky, watch cartoons. Works for me. :)