Hi, Melow
Sorry to hear you're feeling so low; it's a horrible state of mind to be in. Please try to eat - it sounds a cliche but you really do need all your strength and if you make yourself physically ill things will just get worse. Stress makes our bodies use more resources than normal (esp the B vitamins) so get a good supplement!
You do sound pretty low, so I would agree with Squig - get yourself to your GP. You've got nothing to lose. Anti-depressants don't remove your problems - they're not a magic bullet - but they will help you recover your perspective so you can get on with sorting things (including emotions) out. I suffer from depression, and I find that once I start to get a grip on things and take control, I do start to feel better. It's the feeling of helplessness that's the worst thing for me.
I know it's hard, but try to separate your 'physical' problems - house, job etc from your emotional ones. You NEED somewhere to live! Eventually, everything will settle back into place. Don't shut your daughter out, or your dog! They're hurting, too and need you more than ever.
Good luck, and let us know how you are.
Janie xx