I'm in the middle of week 7. Started in January and have been taking it steady and had to repeat weeks due to bad weather and illness. A few weeks ago I was not able to complete a run because of very bad pain in lower shin and calf below the muscle. I rested it and went back a week but it is still niggling. If I leave 2 days between runs it doesn't get too bad. I am using barefoot running technique. I have read that it might be tendinitis due to the tendons taking longer than the muscle to get strong. Has anyone else experienced this and does it get better?