It's a symptom of a ton of shit. If you knew you got bit within a month that of a tick, the bite is infected, you feel like you have the flue, lots of joint pain, etc go to the doctor.
Not sure how long it takes for Lyme to kick in but whatever.
To the anon who said you would know if you got bit by a tick, I disagree. Ticks I've found on me in the past and bit me, I didn't notice until I saw something or brushed it with my hand.
I felt the ones crawling on me the other day since my legs are hairy as fuck and felt the tickle.