Hi Gustavofring, I started running in June 2008, I had to tape my knee until late 2009 due to knee pain and weak quads. I built up slowly from 5, 6 to 8km. I didn't run my first 10km in training until October 2008. Raced my first 10km race in February 2009. Then I built my long run up, first twelve, 16, 20, 25 and now 30km.
Running doesn't bother me with SA, because I don't have to talk to anyone. I often start early so there is not many people around. There are some quiet trails where I live.
Perhaps you should build up more slowly. Jog/walk. Even if you jog 200, run 500m for a start and the build up the running distance. Perhaps a home treadmill is an option?