You prob got bit by another one and don't even know it ? Plus not everyone gets the bulls eye rash like I got .. He prob prescribed Doxycycline . I just cant stomach that stuff. Hopefully you will handle it better than I can . You should feel better after a few days on the antibiotic. I have good days and bad days.
Forgot to add. If/When taking the antibiotics get yourself some probiotics. Fast6hand recommended them and they DO work great,, especially when taking strong antibiotics..
There is more than one antibiotic you can take . If the one bothers you too much then ask for another one instead. Stay out of the sun too.