OMG!!!!! A 9 or 10 pound baby...that is outrageous!
I mean outrageously normal, that is.
Ugg! I hate hearing this bull dung (that was me being extremely polite instead of using other colorful words I know...and in many different languages too)! That is all it is, as good as poopy...total speculation and paranoia, especially coming from one person who has not been consistantly measuring you.
Just like others have said...guestimating weight at this stage in the game is just a guess, no matter how good the ultrasound.
And, as someone else said ...people wobble at the end because their hormones have loosened up their pelvic bones (the cartilage holding the bones together softens) to expand for the birth of the head, and the baby's head moulds as well, that is why there skull bones are not fully connected, to help mould for the birth.
Our bodies were made for the job! If you think about the complexity involved in making a child in the fist place, labor is just one day (or a couple) in the process, so why should it not be able to do its job as well as it did on those other days!
Oy Vey, hopefully this lady will not be on call when you go...or if she is perhaps you could just send her total loving vibes and let her have her thoughts but let them be hers and totally separate from your great birthing attitude...and you can tell her all is well, sometimes even nervous people will take this to heart coming from the mother. Or, another option switch.
And check out this similar thread from a couple of weeks ago...some of your same issues addressed in detail (talking low measurements but the issues are the same with low or high or weight or size concerns)...http://www.mothering.com/discussions...d.php?t=564745