Another possibility for nodes that seem permanently enlarged and also hard yet mobile would be some granulomatous disease. Yes, I'd very much think that your 'tonsil stones' as you described last year are related.
From "A clinicopathologic series of 22 cases of tonsillar granulomas":
https://www.ncbi.nlm.nih.gov/pubmed/10718441
"a number [of cases] may not develop an identifiable etiology, with the granulomas probably representing an exaggerated immune response to chronic tonsillitis."
You might have something similar to but yet different from Kikuchi disease or Rosai-Dorfman disease. But your nodes don't have necrosis in the center, while they are too small for Rosai-Dorfman. The histiocytes could be in the tonsils and also in the nodes, surrounding and walling off some common infection.
Did you start off in the very beginning with a fever?
As you are learning, you should eventually feel as if your head will explode from too much information. Then you'll know you are proceeding correctly :)
I had the TB skin test done when I was around 16 or 17 years old for a nursing class at my high school and it was negative. Of course, I could have had it again. I don't think it was tested for in the recent blood work.
Here is is very first ultrasound report. When they did the follow up there were no significant changes, and then the CT scan showed nothing significant.
"
I went to the doctor in
February due a swollen lymph node in my neck. I told her that I had first noticed it in January and that it has neither increased or decreased in size from what I could tell. She didn't seem TOO concerned about it, but ordered an ultrasound for me anyways. I went to get an ultrasound the next day and these were the results:
Ovoid left submandibular lymph node (level IB) noted, measuring 10 x 5 x 9 mm (transverse, AP and CC dimension respectively). Internal architecture is heterogeneous with lack of normal hilar morphology. Intralesional hypervascularity noted with a
centralized feeding vessel. Adjacent smaller hypoechoic lymph node noted measuring 7 x 5 x 5 mm. This also demonstrates lack of normal hilar morphology. Visualized regional musculature demonstrates a normal sonographic appearance.
IMPRESSION:
Ovoid hypervascular node at the left submandibular region, suspect inflammatory (reactive) lymph node. However given abnormal architecture and hypervascularity, malignant node or other neoplasm remain considerations. Consider followup ultrasound in 2-3
months for revaluation. "
"I have impacted wisdom teeth and swollen gums from when I had braces, so maybe that could be causing this?"
Yes, that's most likely. However, that doesn't quite explain why there is that odd cascading behavior - and that behavior probably explains ordering the FNA.
Can you post the sono report? There are some key things to look for, to mostly rule out cancer.
"Unfortunately, I'm a huge hypochondriac..."
My own belief is that people who are prone to worry also likely have very reactive immune systems.
Also to add: The nodes feel hard-ish(?) but are super mobile. And the ultrasound noted some hypervascularity.