So he's contradicting himself - one minute saying it's not important, then it is important (because it's important to you) - but not important enough to do it yet.
I mean, talk about mixed messages! It sounds very confusing.
It's either important to him or it isn't. It sounds like the truth is that it isn't (and by extension, you and your wishes are not important).
I'm sure you've thought about this, but there are so many reasons why having a child with someone like this may not be a good idea, so please think carefully.
This is someone who's shown he's capable of stringing you along, manipulating you into doing what he wants (and now you are actually considering doing what he wants, so it's worked).
Is that someone who is suitable father material?
At this point for me it would not even be so much about the wedding, but the way he views you, the way he views women, the way he views your relationship.
Hard for you as well though with your age and wanting a child so badly.... but please think about the child and what kind of father they are going to have. This does not sound like a brilliant situation to start a family :(