Frustrated

I don't know how to vent my frustration anymore. Everything has changed and as time passes I feel like Cordt and I are changing as well. 
Less than 48 hours after Klaira was born, Cordt got a call to start a new high paying job. It was bitter sweet for me, all of a sudden our family plan became a mommy plan. I have started to grow into my role, I have matured quickly and the person I always thought I was has changed. I am no longer impulsive, I am much more patient, and I worry about the future. 
Cordt Has also changed. With a new job and more money than he has ever had before, he now spends. He still doesn't think about Klaira's future or how we are going to pay for soccer, dance, or college. He is still hung up on his pre-family life. He still brings up 'selling his RX-7 for me'. He didn't sell it for me, he sold it because a 2 door/2seat vehicle was impractical since there was about to be 3 of us. 
Klaira is now 4 months old (as of today), we just finished a rough financial time because Cordt was off over 5 weeks during christmas. We are in dept, we have credit cards that need to be paid off, old phone contracts, a traffic ticket, and of course rent and bills. Non Of these things seem to even phase Cordt, the man who was always so against loans and dept. 
This week has been the last straw. He brought up taking out a loan at the bank to buy a car. We already have a car. 
His argument:
1. I like cars
2. The car we have isn't fun to drive
3. I sold my RX-7 for you
Are you kidding me? There are so many other important purchases we should be making, and all of them should wait until we are out of dept and financially stable (i.e. 3 months of income in a savings account). I brought this up and was met with resistance and anger. I am at the end of my rope. I gave up everything to stay home with Klaira, to give her the best childhood possible. I gave up going back to university, I gave up my social life, and now I'm afraid I'm going to have to give up more. 


I am so angry and resentful that after I have given up so much, and Cordt who hasn't truly given up anything but a car and a few dollars for formula can throw a car in my face. He keeps saying he deserves something he wants, but in my eyes having a child means you make sacrifices and put that child ahead of your wants. I am not saying to be selfless, no one is truly selfless, but a certain amount of understanding would go a long way. 
I don't know how much we have changed as individuals, but I know that as a couple we are moving in opposite directions. I still love him but that's not enough, our communication is broken. He is gone so often that there is a disconnect in our relationship and family. Instead of looking forward to him coming home I look forward to him going back to work. And I sometimes feel he is as well.
I don't know how to fix it, or if it is even fixable. Klaira is my everything and I don't feel like Cordt has the same devotion. On our own Klaira and I would struggle to get by until I finished my schooling, and she would spend much time in daycare. With Cordt we have a more secure life, there is a steady income. I just can't keep pretending things haven't changed, I don't want to feel angry anymore. Most of all I want Cordt to understand where I'm coming from instead of throwing his perceived selfless acts in my face as a way to get what he wants.