I'm Type 2. For some reason, I'm having one of those days...I am in such a "blue funk"

I just can't seem to cheer up. The sun is shinning. It's been cold and rainy here for the past 2 weeks and you would think that now the sun is out I would be cheerful. But
NOOOO, I'm in a
blue funk!! Does anyone else have days like this? I dreamed
all night last night and the two nights before. I'm wondering if I'm not getting enough
restful sleep.
I work at home and enjoy it greatly, but every now and then I just get totally wigged out. What's up with that? I feel like I can't get my house under control even though I'm told everything is in it's place. I just feel like there is something more I need to do to make it perfect but just can't quite put my finger on it. Am I just anal retentive or what?
I've had some coffee this morning thinking it will make my brain happy
I'm not saying I'm not happy this morning, but I do feel just a little bit yuck!!! This happens to me from time to time. I take Cymbalta and generally I'm an upbeat person. Why can't I put my finger on what's causing my blues???
Clee