How Can Acute Coccyx Pain Be Treated?

Hi sir, I had an injury in my Coccyx say ten years back and since then it has been hurting me even my lower back had time to time cramps and problems but that is not my worry as my lower back doesn't heart me regularly and only sometimes it gets pain. My main problem is my coccyx that is really hearting me like anything. I can't sit properly not even for more than 5 minutes. The worst thing is when i have to drive my car or my moterbike then it hearts me the most. I don't know what to do. I had recently went to Indian Spinal Injury Centre and the doctor recommended me for a coccyx cushion. Should i have some medicine. Please guide me sir on this.