Battling Depression while pregnant.

Ay
I feel like I'm losing this battle.
Sometimes I try to be so positive; but one thing sets me off and I go back to being depressed.
I feel like my life is passing me by; while my old 'friends' or growing up; and I'm just stuck here; being a bum at home.
The only good thing going is the baby boy growing in me; but I'm scared crapless that soemthing will happen;
After a miscarriage; sudden infant loss at 7 weeks; evictions and school debt; I just don't think I'll be able to even smile anymore:/