You went to a doctor because you had a tick, or because you had symptoms? (like the red ring)

for a prophylactic dose of antibiotics after having a tick latched for an unknown amount of time

the US gets a persistent amount of emergency room visits for this sort of treatment (tens of thousands annually), and with all the news about increased tick and lyme exposure a larger number of people treat it preemptively, especially with children

Hm, that approach would have me at the doctor every second day and being on antibiotic all the time. I am outdoors a lot and had 5 ticks on me just today after not checking enough last night after being outside.

I only would consider antibiotics if the red ring appears. In general I suppose I already have resistance .. or the disease slumbering in my body.