I'm a secondary teacher, 28weeks with my first pregnancy and was SO lucky to have the real icky bit over the summer hols. I was never actually sick, but spent the whole summer hols on the sofa exhausted & constantly on the verge of vomming!
Fortunately I didn't feel sick in september (11 weeks) but I was still knackered until at least 18 weeks.
SarahScot's advice about working at home is great. I would get home as soon as I could, sleep till DH got home at about 7, have dinner, squeeze in any work I could before going to bed at 8 or 9.
I'm now supposed to be working through my backlog of btec marking I accumulated during that time. (just existing was my focus for most of last term).
Telling people asap was really helpful. My dept are the best in the world and they've been so great.
Another lady in the dept had terrible ms all the way through her pg (she's incredible, I'd have died!), I think the best thing you can do is let people know so that they can keep an eye on your kids if you have to dash.
It might help to see if you can swap rooms too, I'm at the arse end of the school and if I'd been sick it would be a loooong way to run to the loos!
The NUT have a great document on their website detailing guidance for employers for pregnant teachers. It says things like they should provide somewhere for you to lie down to rest at break/lunch, take account for needing to wee more, giving up break duties, etc.
And they shouldn't be giving you scornful looks for leaving at 4 anyway - there's that small (though much laughed at) matter of the work/life balance! We've all got to do the work anyway, some of us just prefer to do it on the sofa! But that's another story for another time!
Right, I must check my planning for tomorrow and crack on up btec mountain. 10 more weeks till maternity leave (not that I'm counting down 