Hi J.,
I did not read the other responses so this may be redundant. My son had lyme disease when he was 2. He too had the bull eye rash. Thank God he did, and your daughter too, becauise some people infected with Lyme do not get the rash & the longer you wait to be treated the worse it is overall.
My son took amox. for 3 weeks and has been just fine sice. His dr. said that with this course of treatment he is 99.9% cured.
There really is no reason for any other type of test. The bull's eye is distinctive enough. The dr. was actually very excited when he saw it, actually happy, because he had an intern training with him that day and he was happy to be able to share my son's rash!
Do not let mommy-guilt get the best of you! You did the right thing!
Also, our pharmicist recommended chewable acidophilus daily while taking the amox to help keep the good bacteria there. Taking antibiotics for this long really can cause havoc on the digestive tract; diarhea, yeast infections. The chewable acidophilus tastes good. In fact, my kids are STILL taking it daily and it has been 4 years! It's good for immunity too!