With baby's head pressing squarely on your bladder, you're probably clocking some quality time in the bathroom. On a similar note, if you're finding it tough to poop, load up on the fiber. Whole grains, veggies, and dried fruits (but not all at once!) should loosen things up.
From now on, baby's growth is mostly in the plumping up department -- though he won't get much longer, he'll put on a pound or more of baby fat before birth. (He's about 15 percent right now and will be about 30 percent by full-term.) His hearing is totally developed (tip: baby responds best to higher pitches), and if he really is a "he," his testes have probably completed their descent.
Your baby doesn't have much room to maneuver now that he's over 18 inches long and tips the scales at 5 1/4 pounds (pick up a honeydew melon). Because it's so snug in your womb, he isn't likely to be doing somersaults anymore, but the number of times he kicks should remain about the same. His kidneys are fully developed now, and his liver can process some waste products. Most of his basic physical development is now complete — he'll spend the next few weeks putting on weight.