By your description, I would guess its geographic
tongueTongue tie (migratory glossitis, erythema migrans). Does the white and red patches/discolorations move or change locations? Its possible that you may have had those patches and they move around all the time. Generally its symptom free so people never notice but sometimes there is pain or a burning sensation associated with it. It is usually treated with topical pain medication or steroids.
I would recommend seeing a dentist for a proper diagnosis or referral.