Pregnancy depression?

Leann
Ever since I got pregnant, I've been extremely depressed. Not because I'm pregnant, just about everything else in my life. I'm soooo happy and blessed to have my little girl growing inside of me and I wouldn't trade it for the world! I'm just so depressed all of the time. All I want to do is lay in bed in the dark and do nothing. I have no motivation to clean, or cook, or go anywhere, or even see anyone. I fly off the handle so easily anymore.. And I don't just mean pregnancy hormone moody.. I'm extremely angry and short tempered all hours of the day. I can go hours on end without eating at times, and then others if I don't eat every 2 hours I'm dying. I've been depressed before and this feels the exact same. I'm just so unhappy all the time and I can't figure out why. Has anyone else experienced this during pregnancy? Also, I'm 23 weeks pregnant.