Hello Hertz,
I am glad you found us at the Pain Management Forum of MedHelp, welcome. You are correct that treatment of an ingrown toe nail can be excruciating for awhile. I am sorry that you have another one to go through.
When you see the physician again I would just tell him your experience last time. I would ask him/her to provide something for a few days to ease your pain. If you allow them the choice you will usually do better than requesting a specific drug. And to be honest what works for one in a given situation may not work as well for another.
Best of luck to you. I hope that this procedure will be less painful than the last. We'll look forward to your updates.
Peace, Tuck