The ob told me different! I was measuring about 3 weeks behind for the last leg of my pregnancy, I just figured I was going to have a small baby and the Ob said that it was fine and it makes sense to measure short during that time since the baby was fully engaged. I think the Ob was right, because I had a 9lbs 2oz baby (I'm a very small person) even though I measured short quite significantly and had a good amount of fluid.

It's not long to go for you anyway... Good luck!