sorry meglet, i have no idea, perhaps the PALS service at the hospital you plan to be with. Don't use your real name though, when you email them!
can you see a doctor over there at all? you've probably already looked into this but i think you usually need a letter from a doctor to fly after 28 weeks (although you can usually fly up to 35/36 weeks)
if your GP knows you've moved abroad, they will have de-registered you and you won't be able to re-register unless you become resident