Hi Lily,
I'm with the other girls - i think you should see someone else. Just going to see someone else doesn't mean you will necessarily give the other one the boot - but a second opinion can't hurt. Some people get lucky and just click with first FS (or GP or dentist or anything!) straight away, but others need to find the right one. Can you take your DP with you on the next visit?? I think it helps when your DP gets on with the FS too, as this is partly their journey too and they sometimes need to step in and help along the way.
I went to a clinic where i was given an incorrect diagnosis and wasted 18 months before seeing someone else, only to finally be diagnosed correctly.
A second FS might not change what you do next, but you'll never look back and regret getting a 2nd opinion and you might hopefully find a FS who you get along with really well.
I don't know anyone in Sydney, but hopefully someone else can advise you.
Good luck.