Here are the Lyme Disease Treatment Guidelines. (ILADS Guidelines have a link to these treatment guidelines)
www.lymenet.org/BurrGuide200810.pdfScroll down to page 18 and 19 - there will be the dosages of abx required...and also how long to treat.
You can even bring these to the Dr. to show what dosage is necessary, and that only a few days or a week is
not long enough.
You need to treat until symptom free plus several more weeks.