I had a root canal 8 days ago on tooth #5 and started antibiotics. Day 4, my tooth was extremely sore and I noticed my face was sore and I had a bump that was extremely sensitive far above my tooth by my cheek bone. Day 5, symptoms got worse, more radiating pain. Day 6, back to the dentist, he drilled on my tooth looking for an extra canal or crack. Found nothing and put me on Kelflex antibiotic. Excruciating pain. The lump on my jaw bone has gotten larger, my face is a little swollen.