Yep totally agree with AJP...they can be very innacurate!!

Without going into detail I know a few women who have been told the same thing and birthed babies well below the estimated weight!!
As far as I know they don't do much more growing in the last month..they just chill out and relax and wait for the big moment!!!

If your health providers were worried then they would tell you so and give you more information!

You will be fine!! Can't wait to see a birth announcement and the weight details....hehehe