Wannamove

Hi All We have just been granted our 190 visa and will be moving to Sydney in mud July. At this time I will be 24 weeks pregnant! I'm looking for any advice on what the process is for registering for pre natal care and options of where to birth. I already have a Medicare number from when I was on a working holiday visa 3 years ago - will this still be valid? I am so excited to be starting a family in Oz but would love any helpful bits of advice. Thanks x