A couple weeks ago, I gave up on going to the gym, going for walks, and weight lifting. My hands and feet are just too swollen, and any type of upright walking position just makes them worse. When I wake up in the morning, it is painful to move my fingers, and when I clock in at work the machine doesn't recognize my fingerprint!
But I have discovered the PERFECT workout for pregnancy. Through my job, I have a pool available to me during my lunch break, and I have been swimming laps for about 40 minutes a day. During those 40 minutes, I don't feel weighed down by my extra 40 pounds--I'm actually more buoyant! Also, I don't feel hot, the swelling goes down, and it gives me energy for the rest of my day. Swimming is also good for getting the baby in a favorable position, as it relieves pressure and allows the baby to move.
Sometimes I go to a senior water exercise class, also available to me through my job. It's harder than it sounds and is a great workout for the entire body. It's a good change-up from the laps.