Pain might take longer than usual when ribs are involved. If you feel the pain has been of the same intensity from past seven days and there is no relief whatsoever then it could be a liitle serious. I'm assuming you fell on your lower ribs which are more susceptible for breaking under stress.
Next Steps
Visit an orthopedist and get the x ray done. That will put an end to the speculations.
Health Tips
Avoid sudden movements and try to find a comfortable position to be in, in the meantime.