I read your original post, and I saw a lot of myself in your post. (Not the whole mom with 2 sons, I'm 16! :)
But I too am taking Celexa, B-vitamins, AND some mix of folic acid and whatnot. Anyway, I know EXACTLY how you feel. It's creepy, but like i said, I see a LOT of me in that post. My meds don't work well for me, so when I'm feeling especially down, I write and I also try to get as much fresh air as I could possibly breathe. Have you ever sat down with your husband and talked about what you are going through? Talking helps, but then again, only with the right people... there are some people that you can talk to and they'll make everything worse, and then there are some who seem to radiate positiveness and you feel sooo much better.
I hope you feel better
~"When one door of happiness closes, another opens; but often we look so long at the closed door that we do not see the one which has been opened for us." ~Helen Keller