@Zarathustra,
The thumbs up was a question to the community, things work in inscrutable ways here in my opinion.
As far as the thyroid issues. Nodules are verrrrry common and run in families. The nodules are rarely cancerous. And, God forbid, one or more turns out cancerous they are usually very slow to metastasize and survival rates for most ( especially the most common) is virtually 100% for stages I and II. As cancers go even survival rates of stages III and IV are very good usually approx. 90% and over 50% respectively. The surgery is relatively simple, with quick recovery times and without any real major side effects to worry about.
I know this can be frightening but if I was going to have to get cancer I'd choose thyroid cancer. So calm down as much as you can, for now there is not a strong reason for worry about the wasted time.
And yes thyroid problems run in my family. I was hyper twice at 14 and 31 and am now hypo at 55. Several other members have had issues also, we are all fine. Good luck and don't worry until you need to!