Thanks again everyone.

It was just a GP, he is a great doctor but I can't expect him to know everything. I am going through the midwife program at Sunshine Hospital - they just couldn't fit me in for a 20 week u/s so I went privately. I've got an appt with my midwife on Tuesday morning, so I will talk to her about it then. Obviously there is nothing I can do about it at the moment, but hearing that other people have been through it without major complications does help.