Thanks for writing to us.
From your description it seems that there is a soft tissue injury
or a muscle sprain
due to the fall. An injury to the rib needs to be ruled out after an X-ray. usually such injuries do take 3-4 weeks to heal properly.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal