First baby finances

So we found out yesterday were having our rainbow baby. We weren't planning this pregnancy or the last! My hubby and I both have decent jobs, he's a hvac tech and I'm a receptionist but ALL he can think about now is how we are going to hae too many cost and not enough money and how he's going to have to work over time and how were just screwed! I know that important but all I can think about is how I want to keep my baby healthy and how I'm so worried about losing this baby too.. Anyone else having this problem? Or been in the financial worry boat?