I'm trying not to be a hypochondriac, but at the same time trying to be aware of my body.
Welcome! You are NOT a hypochondriac. You have good reason to be cautious and observant, and you will need to remain cautious and observant. Glad to hear you got treated very quickly after a known tick bite. You have a better chance of not developing chronic symptoms.
Coinfections testing seems to be even worse than Lyme testing, and symptoms can cross over among the various infections making it harder to decipher, although some infections have more unique and easily identifiable symptoms.
I would advise you to keep good records, including dates, of your experience, your symptoms, your medications, and your responses to medications. That information could benefit you greatly in the future. It can also provide clues to you and your doctor of any yet unidentified coinfections. My impression is those can be harder to get rid of than the Lyme.
If I were you, I would make a record of ANY new symptoms I hadn't had before and ANY changes you notice in or on your body whether you think it could be from Lyme or not.
Not trying to scare you. I just think it's better to pay attention. I had mild symptoms since childhood. Always coming up with excuses and rationalizations as to why. Wasn't until I started having severe chronic symptoms at age 39 that I knew I was sick, and didn't know anything about
Lyme and coinfections until 7 years after that. Once I started researching I recognized symptoms I'd had since childhood were related to bartonella or babesia.