Hey Mary - is your leg feeling better?
Ditto to what vonfunk said. I don't want to sound like an alarmist, but if the cramp doesn't clear up soon I'd call your dr. I ended up with a dvt (and pe's and a couple superficial clots) last winter. The first symptom was cramps in my calves (I could hardly walk - lasted a week - the first dr. I went to didn't even think of checking for clots because I didn't have any swelling/redness).
I've heard that people with Crohn's are also prone to cramps, so hopefully that's all it is. But if this lasts longer than's typical for a cramp, call your dr - they can ultrasound your legs to see if there are any clots.