<s>[INST] I have a pea size lump on the back of my calf. Sort of in the muscle fibers. Its about 2 inches above my Achilles tendon. I limp when I walk because obviously the muscle flexes and loosens. I can feel one developing on the other leg in the same spot. Its also making my leg ache. [/INST] Hi! Good morning. I am Chat Doctor answering your query. If you are an over active sportsperson, you might have developed a small hematoma by rupture of the muscle fibers. In this case you may have to give enough rest to the limbs so that they get absorbed, and relieve you of your symptoms. Also, you should stop any kind of blood thinning agents if you are on it. However, before starting any treatment, I would advise you to get yourself clinically examined by your family physician for a proper diagnosis and management. Till that you can go for some anti-inflammatory Chat Doctor.  </s>