Teaching up to Delivery

Hey guys, this year I will be a second year teacher and I am due with my first child October 9th. I am planning on working up to the week before my due date (I need to at least finish August to make the FMLA 1 year).

I am totally freaked out about going back to work at around 32 weeks. I worried how tired I'll be and how I'll be able to tolerate block schedules without bathroom breaks. I also really don't want to go into labor in the classroom, I just don't feel comfortable with this idea. I can't quite put into words why I feel this way. Maybe it's because I teach chemistry at a small school.

Anyone else going through this? Any words of advice?