She have not been in any sport till date but now she is preparing for the physical exam so she has to run in a quite good speed but she didn't have any sports history. It has been 15 days she is running and it has given her immense pain in her legs (below knee i.e, calves) that she even cannot stand properly. What should we do as her physical exam is in September only so she cannot miss even a single day running for increasing her stamina. Please give some medication advice.