I'm in a similar boat with chronic depression (dysthymia/persistent depressive disorder).
I try to do a bit of something when I can - play some video games, have a bath, wash some dishes, whatever... sometimes I can only manage a few minutes and I have to dive back into bed to hide again. I try to have several options open so I can let my mood wander where it wants. If I need to go back to bed thats ok, but if I can sit down and watch TV for a bit thats ok too.