It looks bad. I have been waiting for the ticks to come back out here since the weather has turned "normal" again.
I had one of these last year and caught lyme again for the first time in 17 years. I never found the tick, only the bite. I knew I had lymes when symptoms started because I've had it before.
No insurance. The "cheap" doctor wouldn't believe me and told me to go to urgent care. $150 for that advice. Urgent care would have been around $1200.
I started taking 12 year old ammox antibiotic for lack of anything better. That's what they gave me the first time . It was working but also who knows how well and started getting other symptoms. A friend had doxycycline and gave me 14 days worth. The most the doctors here will prescribe first time around. Doxy is the goto prescription these days. Lymes specialists recommend 28 days minimum especially if you get the bullseye. Vets give dogs 28 days minimum around here.
I found Jasecase
https://jase.com/products/jase-case and ordered a full case that came with 120 doxy pills. I took them for 28 days and it seemed to have cleared it up. Though some days I wonder what lingering effects there might be that aren't just getting older things.
It's nothing to eff around with as others have said. Cistus Incanus (rock rose) tea is something I always try to remember during tick season. I think it works for me. It tastes good to me too.
I learned that everyone might want to take it more seriously than your general medical pros do in this country. Something strange is going on there.
I'm glad you found it right away. I hope you get rid of it before it can become a bigger issue.