Hi Tammy
How frustrating! Did she actually accuse you of "lying"? That's just totally unacceptable! What is her problem? It sounds like she is the type of person who abuses her role of someone who has some control over other people.
I can see how this could really stress you out because who wants to switch doctors - form a new relationship, have all transcripts carried over? I would talk to your doctor again about this situation and stress to him that this is really causing you grief, grief that no patient of his should have to endure at the hands of his nurse.
Maybe, at this point, you need to type a formal letter of complaint and send it directly to the supervisors.
Good luck with this and I hope you feel better!
Best,
Rachel