About the best any of us can do is get a professional examination and diagnosis from a veterinarian. The
symptoms sound like what can happen when a human has a
concussion, memory loss, disorientation, maybe dizziness (not sure about the walking in circles ; ) ... I think a concussion is normally temporary but some are worse. I do recall reading/hearing about concern about multiple concussions in humans, especially children. Said another way, one usually isn't a big problem.