I was measuring 31 for the last 3 visits to my mw, so she sent me for a growth scan and they told me that LO was a little baby weighing 6.5lbs and then gave me a bit of a compliment by saying " Your not that big yourself you have a small frame"

, I went to the mw today and I am not measuring 33cm and the mw (a another different one) said that I am just hiding baby well....
I dont get it either, if there was a concern Im sure she would let you know, from what I have learnt is that they use that chart in the back of your antenatal notes to record your measurements, if it goes over or under the lines then it becomes a concern appartently.
hope this helps.
xx