Had Red Post Coital Bleeding. Biopsy Showed Atypical Immature Squamous Metaplasia. Treatment?

Question : Can someone help my dilemma? I am 37 year old with 2 children 7 and 3. I was treated 14 years ago for CIN 2 14 years ago with LEEP. I have gone for annual paps since them and never missed. All subsequent paps were hpv neg and normal pap. In the past six months I had two episodes of bright red post coital bleeding. Went back to my ob gyn who noticed a small ectropion. He did another pap, swabs for infection, cultures, urine sample, EMB, ecc, and abdominal US. All negative. Most recently he did another ecc and colposcopy- results were ecc benign, two punch biopsies benign and one other punch biopsy says "Atypical immature squamous metaplasia" which stained p16 negative. I see this p16 negative is a good thing but what could be causing this bleeding and what would cause these immature cells to be atypical? I did have a complete thyroidectomy for papillary thyroid cancer last year and since they keep me very hyperthyroid. Wondering if this has anything to do with hormones now. Thank you for your time.

Wow! This was helpful. If you don't mind I have other questions.

Should the ck 17 have been done too or was the p 16 enough to rule out CIN 3?

I'm trying to understand I guess since there are multiple things going on here with me. an ectropion show up as atypical immature squamous cells? An what would cause this Atypical results then?

I never knew hyperthyroidism could do so much. My current TSH is 0.02

My doctor is wanting to do a LEEP to stop the bleeding. As you can tell I'm worried of them finding invasive cancer after the LEEP.