Lyme without symptoms?

Hi! 2 years ago I ignored a severe bullseye rash. I remember seeing a bite above my knee and a ring around it that for the next months had been enlarging and traveling up to finally form a full circle around my tummy. I didn't have any other symptoms however and didn't show it to a doctor.
It was only a few days ago that I had discovered that this was probably a lyme infection symptom.
Do you think it possible that I have lyme since 2 years ago without any severe symptoms? I have some mild issues with my health but generally feel rather healthy.