I was given indomethacin for what was diagnosed as ice pick headaches. I took two to begin with and now almost three hours later, it is not working. Can I try one more tablet? Tried to call my doctor twice so far and no one is getting back to me. I am still having great pain, it is getting worse, and I am wondering if there is another drug to try? If so, I could mention it to my doctor or her nurse.