Is it one of those bigger ticks that you can see with the nake eye? If so, they don't carry lyme's disease. It's the really, really tiny ones that you can barely see that can carry the disease. Also, not all deer ticks carry the disease anyway. So if it wasn't small, I wouldn't worry. Oh, and for your info, if it bit you it wouldn't just let go. It would stay on you until it got some blood or you tweezed it out.
