
Though around the same time, I went to the dentist, who noticed that I had bad
decay behind one of my pre-molars on the same side as the lymph node. He took away as much of the decay as possible, but said "We're getting very close to the root/nerve now, and there is still some decay left", so he offered root canal, or trying to put an antibiotic cream on the inside of the tooth and fill it with a filling.