Tisury, I heard that PA has some of the highest Lyme rates in the country. For what its worth, Lyme is a clinical diagnosis, NOT determined by the blood test as false negatives and false positives can occur for myriad reasons. Worse, most people that fear a Lyme condition go out of state (Mass.) because doctors here are not "Lyme literate."
More on seronegativity here:
http://www.lymeinfo.net/lymefiles.html