I too have been experiencing these stabbing pains for a little over a year now. Looking back it began with one every now and then, they started about the time I had my first root canal done. I had another root canal done the day before yesterday and these awful stabbing pains started and have not stopped 24 hours later. They don't last long but I've been getting them anywhere from 3-4 per one minute period to one in a ten minute period but they won't stop...it's excruciatingly painful I don't know how else to describe it. It's good to know I'm not the only one suffering thinking I'm on my death bed. I'm going to start with returning to the dentist to see if something is wrong there, if not it's too the doc for me. I have lost count of how many motrin I've taken, but it does not matter, it's not working. One thing I've read for relief was melatonin because it's a neurohormone, I am willing to try anything at this point. This is awful!!