Assuming it was a sinus infection, they prescribed
amoxicillin,
and that took care of the symptoms in under a week. About two weeks after being off of the amoxicillin, the symptoms began to return. I went back to the doctor and the prescribed some different antibiotic, which again, worked fine. Yet again, a few weeks after being done with that antibiotic, the symptoms returned. I opted to not use antibiotics to see if it would go away on its own, and it did after nearly a month.