Yes, you really are carrying around a 5-pound (2.27-kilogram) weight in your gut. And the little guy is getting fatter by the day. He may be as much as 20 inches (half a meter) long, too.
The baby should be in position for delivery by now. In a few weeks, when you have your late-term ultrasound, the doctor will be able to see if the baby is head down or breech. Meanwhile, he's gotten big enough that however he lies right now, that's probably where he's going to stay.
The vernix, or white coating, on the baby's skin is getting thicker. You'll see that coating when he's delivered. The baby now has well-developed lungs, as well as fingernails. And if you're having a little boy, he'll have something new by the end of the week: His testicles are descending.
The combination of extra baby weight, pressure and swelling could bring on leg cramps at this stage. If you feel one coming on, try a calf stretch to work it out.