I get it randomly too from time to time. I had scans in hospital about 2 years ago and everything was fine.
Lyme diagnosis summer 2017:
Medication: malarone, rifampin, azithromycin, cefuroxime, lymecycline (cycled out after 6 months)
Herbs: nattokinase, artemisimin, cat's claw, whole leaf stevia extract, teasel root extract, sarsaparilla, japanese knotweed.