My first was born at 35wks. Only needed 1wk nicu for breathing and feeding. Now 15mths old and a big healthy happy boy.
Bubs have been born sooner than that and done fine. Sometimes they may need to be taken to nicu for monitoring but at that stage it wouldn't be as bad as some that are born at say 28 weeks. There was actually a little girl who I believe was born at 24 weeks and survived, she was in hospital for a few months but did well. I think you can find ut on youtube, her parents took a photo of her progress daily. Made me tear up :) best of luck