NOTHING IS GOING WRONG!!!!!
Let me start by saying that.
The next year of your life is just going to suck. Less that this, but it will suck. I'm so sorry. New babies blow.
So there are a lot of things on the table right now:
You are both. just. losing it. Everyone is losing it. You're in the middle of the loony bin right now. But....it gets better. It will. You'll find a rhythm. If you do anything right now, I recommend two things: