secondly, how do i go about getting one for my pregnancy. i am currently 21 weeks and live in brisbane and am doing shared care at the Royal Brisbane hospital.
I just read you're in Brisbane. This is the place that was recommended to me - Specialised Obstetric + Gynaecological Imaging ... Just Google "sogi southbank" and you'll find the website.

Apparently it's $300 but the lady who told me about it said she went after she had reached her Medicare Safety Net and she only had to pay $40.