I am training for the London marathon unfortunately I tripped over while running and fell on my chest. The pain has been awful. When I lie down I struggle to sit up, and coughing is really painful. I m not sure if I ve cracked a rib or am bruised. I have been take painkiller but they don t seem to be doing anything. I am ment to be running the marathon in 2 weeks so have tried to run or go on the cross trainer the last 4 days but it s painful. What do you recommend I do. I really want to run the marathon I have hundreds of people that have sponsored me so don t want to let my charity down. I fell on Tuesday but don t seemed to feel any better.