RLS + leg cramps.

Ladies, help! I'm 23w5d and in the last week or so have developed horrible RLS and leg cramps. I toss and turn, get up and walk around, then toss some more. It takes hours for me to actually fall asleep and then once I do, I'm woken up by painful leg cramps. I drink tons of water during the day so this can't be dehydration. It's driving me crazy! I'm exhausted and frustrated with these nightly battles. Anyone else dealing/dealt with this and have any ideas for relief?