Tweaked my calf muscle a week or so ago, nothing too bad, the top of the muscle on the outside (I'm I being clear?) went to the phsio and after 45 mins of the usual pain, she said should be ok after a couple of days. So rested and streched for a few days, couple of bike rides and a flat 5 mile run and all seemed ok! Went for a gental hilly 5 miler today and now my calf (on the same leg) feels really sore but in a different place than before, it's now in the middle of my calf at the bottom of where the 2 muscles join! What the hell is going ? Help