Finishing up at work?

Jazmin
Hi, I'm working full time ATM, and I'm a childcare worker. Im 28 weeks pregnant. I'm in the 15months - 2years old group. 
I'm not sure when to finish up working?? Is working till 35weeks pregnant, and being a childcare worker, too hard?? 
Just wondering what your opinions are? 
Thanks heaps :) xx