Stephanie...
I'm sorry that DH is being a little confusing right now, maybe a long talk to get things laid out on the table and hash it all over. Then maybe you'll have a better idea where his standpoint is coming from? Or did y'all already do that and he just made it more confusing? lol
Have either of you considered if y'all continue to try and sign up for the fall semester classes?
Then if you do get pg then decide whether you want to
a) do a semester or two until before you deliver
b) not go at all until after the babe and you're ready
c) .......insert a choice here.........
I'm not sure what to tell you, it's definitely not an easy decision either way. Go with the flow for now

hope you get that Christmas baby sweets!