Does anyone else get this? Its mainly my right leg muscles seem to spasm and lock up - it almost feels like they're made of stone. Obviously the more I worry or think about it the worse it gets. It starts like sciatica but ends up like this. I also have joint pain when I get this feeling. I had it for the first time about 3 weeks ago and stupidly googled muscle spasms which returned illnesses I'd rather not have!!