I feel your pain on that. It's not so much the depression that hits hardest, it is the waiting and delayed gratification that kills. The only thing you can take comfort in knowing is that it hits them just as hard if not harder than you, though your spouse may not show it.
BE KIND TO YOURSELF AND VERY FORGIVING AT THIS TIME.
If you need to stay in bed all day then do so but at a time and place where your H can't see you hurting. Try a friends house or a cheap hotel if he is home. And at this time if you are too upset to leave the house (like me today) then focus on building a suportive atmosphere by only watching comedies and movies with a strong female role that doesn't remind you of your sitution. No breakups, divorcing, or anything else that may trigger you to cry. I for instance watch fight club about every day.
Here's few ideas I came up with that really helped me and I've passed on to people in divorce groups. Try playing the dollar game where you give your self $1 for every day you have good contact with your H. And here's the kicker, it could be no contact at all. So long as he isn't fighting with you I consider that good contact. You may also want to keep a contact diary to see where you need to make changes in the way you talk, text, and email him. Little tip... there are dating books just for this. Focus on improving your looks even more when your depressed.
And stay away from junk food and alcohol at this time! Trust me on this, as a person diagnosed with a depressve disorder I get my downs a lot and find myself wanting to eat sweets and starches when I'm not hungry because I "need" that rush of serotonin to feel better. This happens especially at night and can cause rapid weight gain in the blink of an eye. That is where 5HTP or L-Tryptophan come in handy and a dose of whatever medicine your are prescribed will really come in handy. I suspect you may get put on a Selective Serotonin Reuptake Inhibitor (SSRI) which helps slow down the consumption of serotonin in your brain. With these you need to take them 6hrs before bed and monitor your potential loss of sex drive.