Yes, I have been screened for Lyme disease several times and come up negative. It is especially important for folks like me who come from New England to be screened for Lyme!
Just to be sure - you had more than just the Lyme titre done, right? Because those are notoriously unreliable (something like a 50% error rate). As of a few years ago, the only reliable diagnostic blood test for Lyme in the country was through a lab called Igenex, out of SF, Ca.