Can all of these be symptoms of anxiety/stress / has this happened to you?

I lived with a family in Maine 6 months ago and lived there for 5 months.

The family's main topic was Lyme Disease. Especially the grandmother talked about it all the time.

I developed a flu-like disease that lasted for one night. The day after I felt fine, it did reoccur the Tuesday after and another Tuesday after that.
I was new to a whole other country but because the fear of Lyme I immediately thought I had gotten a tick bite

No EM-rash appeared and I never found any tick.

But because of my fear/anxiety/stress levels were crazy high about this specific disease, I kind of waited for another symptom. And it did. I got very weird rashes all over my body and convinced myself that I was now sick.

I have been tested twice, but unfortunately the tests are only 30% accurate

Following symptoms since have been tingling/muscle twitches/dizziness/joint problems(never pain, but a kind of stiffness).

My question is: can I have made myself sick mentally? All the symptoms can be from Lyme BUT it could also be from anxiety which a doctor just told me.

Mentally thinking about it all the time has affected my mood a lot, I can be in a bad/sad mood for absolutely no reason.

FYI

I have asked this exact same question to the Lyme Disease group, but I would like your opinions as well.

Has anything like this ever happened to you?
The fear of being sick and then actually become sick?