Go with my brain or my heart?

I’m getting very emotional about this but I really want another baby. Right now my husband and I have a 2 year old today. I’m almost 27 and my husband is 34, our income has improved but we can’t afford to move into a bigger place. We’re in a 785 sqft apartment 1b1b and we can’t bring another person in the place. This year we decided to go back to school to get our bachelor degrees by 2026 but we’re getting older and I really want another baby or 2 soon while our first is still young and while I still have the energy. Currently my husband and I alternate schedules so our child doesn’t go into day care especially since it’s so expensive. Last month, we had a scare but I have the IUD so it’s still little to no chance of pregnancy but my husband face lit up with the thought of me being pregnant. I plan to have it removed if we come to a solid yes to try again. My brain says wait until school is done but my heart says we should try for another one. Any advice???