if your due date hasnt changed i wouldnt worry about it too much, im due just after you on the 7th and weight was never mentioned at my scans so far (although i dont think they bother about that
in the
uk unless they think the baby is particulary large at the end of a pregnancy) you'll notice some recent posts about weights being wildly inaccurate, and my first baby was deemed "huge" and i was sent to a different hospital 2 hours away to give birth...