last night went time trialing and was going strong and about 200m from the end i started to sprint and my muscle startede hurting really badly and when i stopped it was all bulging out , so i stretched it and the pain went away but now and then before i start moving it hurts a little. does any one know how to make the pain go away? ive tried massarging it and using the muscle gently and the pain goes but as soon as i sit down and dont use it the muscle starts to hurt a bit again. so does anyone know how to get rid of the pain