Just noticed the Lyme posts, and I'm glad you caught it early. As you have mentioned the key is early detection and a sufficient regiment of antibiotics.
I found out the hard way years ago, when Lyme was new to our area of NY, and our doctors were not experienced in proper treatment. I didn't have a bullseye or mark to begin with, so I had no clue, just became slowly sicker. After a three visits to the doctor, I was put on Amox, for 10 days If I remember correctly.
That lead to well feeling and back to normal for a couple of weeks, then the dive back down to feeling bad again. This was repeated 3 more times with the same results, moved up to Doxy, but still getting worse. I finally sought out a Lyme specialist, but by this time, I had Lyme for a long time. Headaches, numbness, extreme sensitivity to sounds, generally tired all the time, joint issues..etc..etc. the most distressing to me was I started getting arrhythmia I had never experience before.
The Lyme specialist had it all done, and had seen this pattern many time, resulting from doctors not knowing about Lyme, and when they did finally prescribe Amox, or Doxy or similar, the dosage was too weak and for too small of a time period to be completely effective. So I was one of the ones you mentioned with the very advance case. It was just over a year before I was declared cured. The only antibiotics that finally worked for me was Zithromax in combination with higher dosages of Doxy. It was quite the ordeal, it took a year out of my life, but I've not had a relapse either.
In our area the tick population now is very large, and the last stats I saw were 50% plus of all ticks in our area are carrying Lyme.
Anyway, glad to hear you caught it early, and your back to normal, but you'll never look at a field or heavy brush the same way you once did.
Taking a Tramp in the woods is more dangerous than ever...