Boyfriend problems

Hello! So my boyfriend and I found out 3 days ago we are pregnant. 5 weeks and 3 days today to be exact. We went to high school with each other for a while until I moved and we just recently 7 months ago started dating and spending more and more time together. We were trying to get pregnant and are very happy that we are, but there are some issues I feel need to be addressed. We have lived together since day 1, and have been fine, but recently we argue. We mostly argue about money, he lost his job a couple months ago and I've been supporting us both with everything we need. Today I got very emotional and impatient and we had an argument about money resulting in him taking the car and leaving me--I'm assuming it's just for the day since he usually comes back to talk things through with me. He has had anger issues since he was young and as he gets older they don't seem to go away. He can contain his anger pretty well but it feels like we are both on very thin ice as of now. He thinks I will abort the baby and is freaking himself out. Being a little immature and posting things on Facebook about our situation. (I've always been one to not want to let the world know what's going on in my home, and have told him I don't appreciate when he does that.) i explained that since we don't have much respect for each other maybe we should coparent instead of being in a relationship that we may or may not be happy in. It breaks my heart to say that because I myself didn't grow up in a home with both my mom and dad, they divorced when I was 3 months old so I never got to experience that and always wanted that for my child. But then again my cousin had that type of situation that her parents stayed married until my cousin was 14 and they were miserable the whole time and finally divorced after so long, but on the bright side she knew what it was like to have a mom and dad cooperating under the same roof. I guess what this post is about is just asking for some advice, I'm not sure if my boyfriend and I will be a good match any more? But I do want this baby to have a family. I am torn. He is looking for a job currently but every job he gets he either quits or doesn't show up if he doesn't like it any more.  I am 20 years old, going to be 21 in November, our baby is due March 8, 2017. He is 22, turning 23 in January. Any help or advice is much appreciated! Thank you!