awww! annie!! I'm so so sorry that you're feeling so fat and depressed all the time. It's the worst place to be. It's ok that you don't know what is wrong. You're allowed to be sad, accepting the fact that being sad is "ok" may help you be less sad in the days to come.
Just remember that your feelings that you're "fat" and that "nobody wants you there" are merely in your head. It's a hard demon to battle, though, I know. (which is why I've been doing it for so long now...) but remember that it's just that...a demon. It's not the truth. You are wanted, and you are needed, and you are loved for who you are. Your husband and family love you. Your friends love you. I'm sure they would want to support you. Have you thought about telling any of them about your ED?
Good luck, hon, and please post as often as you want, I promise there will always be someone around to reply. You are a strong person! You're much stronger than your ED! You can beat the demon!

I just know it!!
NEVER GIVE UP
~sarah~