Ive just finished a course of physio treatment about my knee, on the last appointment i mention i'd been getting some pain in my calf and he did a bit of massage on it but didnt seem to worried, he told me to call up after the first big test for my knee which was ballet last night, knee was fine, calf wasnt, only thing is i am claiming on my health insurance, on the physios advice he said to say i had stepped off a train awkwardly so i dont think he wants to push it too much, i will give him a call tonight, my amature opinion is that ive overstretched it but hey, what do i know