Leg cramps

So last night I was stretching out my legs and my calf muscle felt like it locked up and searing pain shot through my leg. Now today my leg is super sore and I feel like I can't stretch it out without it hurting so bad and this restless leg stuff makes it worse! 29 weeks pregnant. Is the whole leg cramping thing normal? What can I do to relieve it? Sorry if it's a dumb question. FTM