Sudden depression. ...33 weeks 3 days pregnant

I'm so depressed. ...tired and don't eat well...iguess I'm just stressed about money,soon to be mommy and I feel like I'm not ready ...it hit me all of the sudden. ..don't get me wrong I'm really happy ail soon have my baby with me..but I'm so depressed right now about if ail be a good mom. ..or if ail be able to give him what he needs...sometimes deep inside of me I tell myself 'what did I get myself into ...I'm not ready to be a mom...can't I go back ...'but I think does are just my fears talking. ..it's just so much going on right now ...i hope my depression is gone before baby is hear