Post Partum Troubles

I am 2 weeks and 3 days post partum. I've never felt this way before. I'm happy and confident one moment then another moment I need to leave the room because I don't want to be around people and just want to cry. I'm stuck between being excited for the future and feeling like a crappie mom who doesn't know what she is doing. I wanna cry randomly and I feel depressed randomly. I don't know how to fix this and I want to. It's affecting my day and it is affecting memories with my baby. I don't want to look back and remember this part of my life this way.