Hi There! I Was Doing A Body Attack Class Last

Hi there! I was doing a body attack class last week and felt pain in my lower calf, kept going but had to stop cos running was hurting it! Was sore to touch and to walk on so developed a walking style that avoided putting weight on front of foot, basically walking flat footed. It easing off although still sore in morning....I also have a horizontal dent along back of ankle when pointing foot down! Feels it's on the mend but due to having an oistoid osteoma in fibula and having an operation to remove it, I now have a portion of bone from lower fibula missing and worried the dent might be related to this....any advice welcome thanks