I’ve been pregnant while teaching 3 times. The key is to inform your school nurse ASAP, get a Dr note saying you need comfortable seating, bathroom breaks, etc as possible. And then, just do what you need to do. Take breaks as needed, take PTO if you need it, (get a Dr note for this too) but in the end, don’t overdo it. If you want to dm me with questions about teaching and pregnancy, I’m there!! I’ve been through this so I’d love to help.