Unfortunately many have been there -but on the up side it means you're no the only one and other can relate / help you out through their experiences ! My wife is suffering again whilst pregnant

I also had depression and was on Fluoxetine for about 8 months.
Start Exercising, especially in a sociable environment i.e go for a run/cycle with a mate and get the heart pumping - have a good chat while you out there with them.
Start a diary or blog (even if it's anonymous) and rant / blow off steam that way, it helps.
Everything may seem like a major issue and hard to work through, but keep persisting and you'll get there.
oh and one last thing