T.C.
If you're Catholic, you kind of assume you'll have more than two children based off of your shared beliefs, right? That's what I would have thought. I would be heart broken to have stopped with two too. Having kids is hard. It does make the momma more distracted and not as 100% in all areas like you maybe were at one point. But that will pass. The kids grow up.
I would suggest to give it some time. Maybe he needs a little more spacing (not sure how old your kids are). And he might need to feel free from pressure of having to have another one. Can you use condoms with your beliefs instead of relying on NFP? Just to make sure it's reliable until you decide?
My husband and I have had similar issues. Ours is due to a really rare genetic disorder we carry. Our first child was born with it. We have a 1 in 4 chance of another being born with it. Prior to getting married, we talked and he wanted four kids at the most. I wanted six. I figured we'd figure it out. Then when our daughter was born with a genetic disorder, it threw everything off. We considered adopting the rest of our children.
It took us four years to decide to have another one. During those four years, I felt similar to you. I felt jealous when I saw other pregnant moms. It broke my heart. It got really bad near the end (before we chose to have another) and I would sometimes burst out crying at church seeing all the new babies and pregnant moms! I was happy for them, I was just sad for me. It showed me what I wanted so bad but couldn't have.
Anyway, I ended up feeling strongly that we should have another. I told my husband. I asked him to pray about it and let me know what he thinks. I didn't pressure after that except to share how I really felt (and I felt it STRONGLY). It was a scary idea thinking of another baby having the same disease (it's very aggressive, causing bone marrow failure and cancers). He ended up praying and feeling it was the right thing. We had a healthy baby boy.
Same stories with baby #3 and baby #4. Only, it was much faster for my hubby to decide. He'd always say we were done, but I would feel strongly there was another (and I really did feel it! I wasn't making it up). And so we had two more healthy baby girls.
Then with baby #5, that one wasn't planned (wanted, just not planned). I'm 29 weeks prego, so we don't know for sure, but she looks healthy too (and might finally be our bone marrow match for baby #1). What a blessing to have had FOUR more children all healthy! Goes against the odds... God knows what He's doing.
Now I feel done...like I really feel like we've had all the babies God wanted us to have.
I share that with you to let you know I can understand your heartache and to also suggest that you pray about it together and make sure he prays about it too and see if God tells him that you are done. God never seemed to tell my hubby that. My hubby just always wanted to be done for fear of another having the disease (very valid reason! and why I never pressured him). He loves and adores his kids, and he regularly thanks me for having them and making sure they came into our family.
I hope the same can work for you...and that this somehow helped you! Good luck.