i would think a scan would be more accurate than measuring your belly??? but even that can be way out! I had a scan that predicted 10 pounds PLUS and she came out the next day at 8pound 15oz. So more than a pound out. sorry dont know how to express that in kg's.

but anyway. i dont think it would be accurate to measure your belly and say ok csection time!

IMO wait til the time gets closer and then get a second opinion if you really want to stick to your guns and need some backup. your belly may not change for a few weeks (even with a bub growing inside it) and things could even out later on. At 30 weeks you still have time.