Definitely mention it to your doctor next appointment and keep your feet elevated. And drink tons of water. Try to sleep with a couple pillows under your feet as well
Very normal. I'm now 36 weeks and wake up just about every morning with swollen hands and feet. They say it's common in pregnancy and even more common because of the heat. They tell you to prop your feet up as often as you can. If you're anything like me though I can't sit still for that long. You should still mention it to your doctor just to be safe. Only thing I can suggest is to drink lots of water. It does help keep it down some. Good luck. :)
Yeah try to stay off your feet and tell your obgyn