Casey,
I know that part of you is disappointed. But this was the best result you could have gotten.
Please take some serious time to evaluate your situation.
It kind of sounds like it might be a good idea to put lots of energy into building a good strong bond and commitment with your DF.
When is the wedding? I'd say, put your energy into that.
I know it doesn't make you want a baby any less but take comfort in the fact that you are very young and have time to get some other things in order first.
Best of luck to you.