My gyn found a nodule on my thyroid in 1991, during my 1 yr checkup after baby #2 was born. He routinely checks patient's thyroids and said he finds several a year.
He sent me to a endricrinologist who examined me. He did several fine needle aspirations (FNA) over the years. Results were benign. He had me do lab work each year to check my thyroid function, all came back normal. I was nervous at first because my maternal grandmother had thyroid cancer, but it was confined to the thyroid (as the the vast majority of thyroid cancers), and she had no further trouble after her thyroid gland was removed.
I am seeing a different doc ( endicrinologist) now since we moved. In addition to one FNA the first year I saw him, he started doing an ultrasound yearly as well as the blood work.
Until 2004, everything was normal, that was 13 years after the nodule was found. It basically stayed the same size and never caused any trouble.
After dealing with totally unrelated breast cancer, I found myself very tired. When I went back to the endricinologist (he is also an internist), he found my thyroid levels no longer in the normal range. From what he said and from what I have read, what docs considered normal changed a few years ago.
Now I am on meds for hypothyroidism.
I would go to an endicrinologist for this. He can do the FNA if necessary (this is not bad) and monitor your levels.
If you don't have symptoms other than the nodule, your thyroid levels may be ok. I felt very different when my levels deteriorated. At first I thought it was from my other issues, but I came to realize the symptoms (mostly extreme tiredness). Each time I have felt this come on again, the doc increased the med level slightly. After about a month I feel better.
If you have any questions, please pm me.