I arrive at the office, get an x-ray, dentist looks at my tooth and says I have an abscess
and it seemed to have been there for quite some time already. She proceeds do drain it, sends me home on antibiotics and ibuprofen, and tells me to come back on Friday to extract the tooth. My headache only got worse, and I felt pain from behind my nose and eye all the way back to the neck, all on the left side. It "stings" when I inhale deeply, so I imagined it's the sinus cavities.