Marriage

I recently got pregnant & before I did, my boyfriend and I planned to get married and do it how it should be. Get married, move in together and then have a baby. But everything has changed (which I am not complaining) now I ask him if we wants to get married and he says yes but he wants to wait until the baby will be older so she/he can be apart of it too. It makes me so sad that he says that bc I feel like he’s not going to make an effort anymore. Should I not worry or has this happened to anyone else?