You seem content, happy to linger in such a snug waterbed.
With my forty plus extra pounds it's evident to all that I've robbed the watermelon stand. You're probably coming up on 20 inches and weighing in at 7 pounds. Maybe. We'll find out soon.
NASA can't outshine your magnificent design for take off. Your head plates are hard for protection but separated for flexibility. The uterine muscles work with your body to line you up optimally.
You are in a word - Amazing.
More about 40 weeks? Netmums.com has the basics.