PZ - This is all completely normal. Every time I had a scan after my missed m/c I asked the operator to turn the screen off until they confirmed there was a heartbeat - even at 21 weeks.

In the morning, go to the Early Pregnancy Assessment centre at RWH. They are very nice there. If you get there early (by 8:30), you won't have a long waiting time. They are open mornings only, M-F. You don't need a referral, just take your medicare card. With your history of multiple m/s, there shouldn't be any issues with them seeing you.