Dear Steff,
I know you're maybe not gonna read this till Monday and i'm blowed if i know what to say that will help. My brother has suffered pretty badly with depression and i dunno what to say to him either. I'm glad you posted, coz we all want to help you out in whatever way we can, and i'm sure that having people to talk to, or post to is a good thing for you.
I'm gonna echo what Northy said, it's not that there's anything wrong with you, it's just those brain chemicals getting all unbalanced and are making you feel crappy. I also agree with Gail, you should probably try taking your meds again, i know that they take ages to start working but it's at least something you can work towards. You're not a failure or a loser, yoiu're a brave and hard working and strong woman who loves her family and still finds the time and energy to try and keep us lot going!
Hope you're feeling better soon
Rachel