The term I think you're talking about is a leave of absence. Check with your uni as to what they allow. I'm allowed one leave of absence of a year. Studying while preg is ok if you're not sick (I had to take time off) and is pretty ok with a newborn. It's once they hit 6 months and are more awake and active that it's a prob. Although you'd have to take into consideration prac.

My advice, for what it's worth, is to jump in and do it. Sort out potential problems later. Or you might be sitting here in 2 years wishing you'd done it.

And yes it can happen any time!