If you haven't had sex nor shared any needles..trust me..YOUR fine! The swollen nodes and pimples are just a coincidence. Seeing you did have a fever it probably was something viral. I'm sure within another week or so you will feel just fine. Don't worry about something needlessly. Sometimes searching the web is helpful and other times it is scary as you see symptoms that could fit a 100 different things.
Feel better and well wishes...JJ....