Tooth pain and the vagaries of tooth nerves! I am glad you found out what was getting you down. Always best to check out your health when you are feeling crappy.

Warm rinse with salt water may help. Rest when you can. Aspirin. The antibiotics will give you some relief pretty quickly.
Complain if it hurts. That can help too. I will keep you next to Karen in my prayer line. Feel better.
Mary