Oh boy, when I was pregnant EVERYONE had an opinion. First of all I was huge, then tiny, got told oh no youll be having a small baby(by other people not a MW)...he was 8pd 6.5ozs and I only put on 6 kgs my entire pregnancy. If the MWs arent concerned then you shouldnt be! At 27 weeks my fundal height was 33cms..and Daniel was only 2 days overdue so pretty much on time. You dont have anything to worry about hun!