Feeling a bit low

For the last couple of days I've not felt my usual happy self. At first I thought it was my continuous early mornings. But after a lot of sleep on Sunday/ Monday I woke up yesterday feeling decidedly out of sorts.

I'm not sure what's up with me, I feel extremely tired even though I've had about 5 times more sleep than I usually have, since Sunday.Apart from my knee's being very painful for the last 10 days or so and my hands being very shaky yesterday I seem to be ok physically. Maybe I've just got a bout of the blue's.

Time will tell I guess.......