Normally the public hospitals won't see you even if you are high risk, before 12 weeks of pregnancy. Until you are seen at the Public Hospital you are under the care of the GP for your pregnancy (as far as the hospital is concerned). You are high risk, but you have a Haematologist and you have a treatment plan from him/her already by the sounds of things. So, I'd definitely speak to your GP about a scan & bloods (if not already done), but then I would hope you have an appointment at the hospital around the 13 week mark (if you haven't heard anything by the time you are 10 - 11 weeks then start ringing). Oh and keep seeing your Haematologist til the hospital takes over too.