How do you deal with wanting different things??

My fiance and I have a 2 year old little girl and I had found out I was pregnant last july but it sadly ended in miscarriage. I was so happy when I found out. My partner was suprised but happy anyway. A couple months after the miscarriage I was ready to try again but he wants to wait until we move to a bigger house. I get it I do but every month my heart breaks alittle more. Its causes countless arguements and I'm just feeling like my life is paused. It's all I think about.. I cant seem to go more than a couple days. I'm at a loss.