Your symptoms suggest coccydynia.(inflammation of coccyx).
Try:
1. Sitz bath ( A tub of hot water with dettol in which affected are has to be dipped in- 10 mins twice daily) for 10 days.
2. Medications like Enzomac, Tendocare and Ceftum will help.
3. Sit on a soft pillow or coccydynia pillow.
Health Tips
Avoiding/relieving pressure off the coccyx is mainstay of treatment.