I likely understand exactly how you feel. If it's anything like how I felt, I wouldn't wish it upon anyone. I'm really sorry. Just putting myself in your shoes gave me a pit in my stomach - the same pit I walked around with for months. My email is in my profile. Feel free to reach out...
I wish I had something amazing to say that would just turn things around. The best pragmatic advice I have is that newborns are really cheap, and you're pretty lucky to have the opportunity to be with your wife throughout the pregnancy.
And finally, for the love of all that is holy, enjoy sleep while you can get it. Having a baby is kind of like being hungover for a whole year...
Be safe, best of luck and seriously bud, Happy Father's Day!!
If money is way too tight, reach out. I'd kiss you on the lips if you'd take all my baby stuff. :)