For me it was a long time ago too, when I was in my late thirties (I am now 71). They called it pre-cancerous and they removed all the milkducts, what was great at that time because they did at the same time breast reduction, what I wanted.
Of course if it would happen now I would up my Iodine and not listen to the doctor.
Right now they keep making notes that my thickened endometrium might be pre-cancerous, but I just go for ultrasounds and see if I can keep it under control.
In your case since the doctors are not worried I would try not to worry either and start slowly upping the iodine. Try to keep your colon,liver and kidneys clean and do all the supplements they mention to avoid detox symptoms.
Not everybody has detox symptoms, of course some of us have done cleanses for years, so in my case I have not noticed much. Doing between 15-20 drops for about 6 months.