Restless nights..

I'm 28 weeks + 4 days pregnant. Just recently I've been having some very restless nights. I'm peeing a lot more. I empty my bladder before going to sleep but I wake up early hours of the morning with a full bladder which then causes me pain in my stomach. Also I've noticed that I get really restless legs and feet, feels as if I've got rats in my legs? Has anybody else experienced this? Any ideas on how to make sleeping at night more easier? I sometimes have to sleep with a pillow under my stomach to comfort me as well.