Congratulations!!!! What a lot you've had to deal with! Glad all is well now.
I had a preemie at 26/27 weeks and he's 21 years old now and in college! I had the Betamethazone, too and my son never needed the ventilator even though he was just 2lb 3 1/2oz at birth. He does have a mild form of cerebral palsy that was diagnosed when he was 18 months old, so if your child seems stiff, insist the doctors check for that. I had to gently push Robby's middle to sit him in the highchair and his legs were stiff, too.
Again, congrats! Enjoy your new baby, but take good care of yourself, too.
Blessings - Barbara