From The Bump:
Baby's now the size of a jackfruit!
As long as she's in your belly, baby's hair and nails will continue to grow, and her lungs will keep developing. She's anywhere from 5 to 11 pounds and is getting ready for a slightly gooey introduction any day now. (Upon arrival, baby will probably be covered in blood, vernix caseosa, lanugo, and amniotic fluid.)
From What to Expect:
Congratulations! This week marks the official end of your pregnancy. Your baby probably weighs anywhere from six to nine pounds and measures between 19 and 22 inches (though tons of perfectly healthy babies are smaller or bigger). The bones in his skull haven’t fused yet — Mother Nature’s way of making it easier to get through the birth canal during labor and delivery. He now has enough fat under the skin to maintain his body temperature outside the womb (with a little help from those cute outfits and swaddling blankets that you’ve been stocking up on!). You (or actually the placenta) are still providing the antibodies he’ll need to fight off infections for the first six months of his life. And if you plan on breastfeeding, your milk will be giving him more antibodies that’ll boost his immune system.