Curly - at 33 weeks my bubs was 1.88kg (about 32 weeks 2 days) but my fundal was 35. Fundal is a good rough guide, but is just that. Also if your bubs has shifted down into an engaged position, it'll shrink back too as far as I can tell?

My fundal is now 36 when I'm at 35 weeks, but thats with Peanuts head nudging my ribs...!