Hi - I just thought I would add to the reassurance you are receiving. I have two thyroid nodules that they have been watching for more than 20 years. At this point, my PCP has been ordering and ultrasound, which is then read by an endocrinologist. At first they did a fine needle aspiration on the larger one (just over 2cm), then were monitoring every year with ultrasound. After several years of no change, they went to 2 years, and in 2023, using a newer protocol (age plus length of time without change) they switched to every 5 years unless there is a change.
So I essentially have forgotten all about it.
Sue