Alysia, It's funny that you mention that exercise relieves your symptoms. In my case, it is what triggered RLS. I used to work out religiously all throughout high school and some of college (5-6 days a week) and every single time I had an intense workout I would go to bed and it was just HORRIBLE. My legs wanted to keep going but otherwise I was exhausted and just wanted to sleep. I would try to put pillow under my legs or lie sideways and put it between my legs but nothing really ever did much. Ever since I slowed down on my workouts the RLS subsided. Thank god.
I didn't get it when I was pregnant and I am so glad, I think when you're pregnant everything just feels ten times worse and the annoyance of RLS is enough to make you want to cry.