Over the last few months, I ve pulled my calf muscle in both legs several times and for minimal reasons, like closing the trunk to my car (I m only 5 feet tall, so I have to pivot on my toes a bit) or standing on the couch. It keeps happening, one week I pull one calf muscle, then 2 weeks later, I pull the other. I ve also noticed that if I sit for long periods of time, my feet are a bit swollen. I feels like I m always on the verge of a cramp coming on... Any thoughts?