Travelling around Oz when pregnant?

We are seriously thinking of travelling around the country in a caravan very soon (crazy I know!).

But we are TTC and I'm just worried about if I was to get UTD now or in the next couple of months - what do I do about GP and hosp appointments?
Because we would like to be away for 6months or so.

Has anyone done this before? Or know if it would be easy enough to just visit any GP in whatever town we happen to be in (and get referrals for BT and ultrasounds)? And if I wanted to visit a hosp for middie check ups (to check bub HB etc..) could I do that?

I'm just worrying about it because we've just had a m/c and I'd want to get regular check up's along the way.

Really hope someone can give me some advice! :)