Could i have lyme disease without the rash and sore joints or is it highly unlikely?

Yes: Lyme disease has a varied and changing presentation. The rash and skin changes are transient and not dependably observed even in a person who has become infected. Joint pain is variable. Interpretation of the blood tests is an intricate matter, and many doctors are not well versed in test interpretation. See an infectious disease expert. They know how to make the correct diagnosis.

Unlikely but...: In patients with lyme disease, up to 30% cannot recall having a rash. In contrast, virtually all patients with the disease will have joint pain as a major complaint. These symptoms can occur at the same time or separately.