Thanks for your query.
From the information that you have provided, it seems that you have hurt your tailbone (called as coccyx
). If this is the case then you must be having pain that can be severe enough to interfere with walking and sitting. It can also cause constipation
In such a case I will recommend that you visit a physician so that a physical examination and investigation can be done to get the right diagnosis. It will also help rule out other possibilities. The visit to the physician will also help take care of the pain and other symptoms.
Hope I have answered your query.