Oh good, I am glad you don't feel stressed from the calorie watch. Staying off the scale is a mixed bag, especially in the beginning, but once out of the habit it freed me to notice other things such as how I feel and how clothes fit.
Maybe Friday when you get home a few stretching exercises will be in order to hopefully prevent the cramps. Was it a charlie horse sort of thing? My DD swears by "blue emu" cream (I think she gets it at Walgreens maybe Walmart) not expensive and probably more about rubbing it in than anything fantastic about the cream, but I am pretty sure they have a total money back guarantee even if the jar is almost empty. Google it, if you have not heard of it.