After about a week of wallowing in a pseudo-cold, things took a turn for the worst on Tuesday. Today I caved and went to the doctor. They were able to fit me in right away.
I got an examination, chest X-ray, and 4 prescriptions. All for less than $35 USD-- including the cost of the medication. The X-ray itself only cost about 17 bucks. Woo!
Downside: I have bronchitis.