How Do You Deal With Pregnancy Depression?

Since I have been pregnant I have decided to give up my career in the Army since my husband is in and be a mom. Well that means a big life change. Now I’m on strict bed-rest due to pre-term labor and am staying home all day, bored out of my mind and the stress keeps pilling on. I’ve had a car wreck my back can’t heal due to the weight of my belly, my truck is messing up, my finances are going crazy, my husband is leaving for Iraq possibly before the baby is born, I got bit by a spider and my leg is all swollen and it hurts to walk, and on and on. Now I spend all the time I have with my husband fighting over stupid things and it is really starting to get to me. I feel so lost and worried and sad. I know I need to do something to keep from losing it, but I don’t know what. I want to be able to love my husband every second he is here, but I can’t help the rage and uselessness I feel inside. Someone please help me.