First, let's talk about your palpitations. PVCs can show up when people are feverish or ill, but they can also appear for no known reason at all. Annoying and disturbing as they are, if the EKG shows them to be benign, and there are fewer than 10,000 per day, then they usually have almost no medical significance.
About the head pain: Actually, the MRI doesn't rule out trigeminal neuralgia, because its cause is not agreed on: Some researchers believe that it's the result of some type of biochemical malfunction within the trigeminal nerve itself, rather than a structural compression. A physical compression might be detected by MRI, but a biochemical error would not be.
'Sidedness' in headaches is important to diagnosis, so If your headache/pain persists and is ONLY one-sided and almost always consists of brief shots of severe pain, then it sounds as though trigeminal neuralgia remains a good bet. One-sidedness is important in the diagnosis of migraine, too.
You mention pain from a tender gland on the right side of your neck, which makes me think it would be a good idea to google 'carotidynia,' which means 'carotid pain,' which can have various causes.
If your headaches are felt on both sides of your head, or if your skull is tender around your temples, then something like temporal arteritis or polymyalgia rheumatica might be involved. People feel terribly fatigued and kind of generally ill with this condition. There is also usually pain and stiffness in the shoulders or hips.
But if your blood tests included something called a 'sedimentation rate' or C-reactive protein (which check for inflammation) and those tests were normal, that pretty much excludes temporal arteritis.
You say that the headaches are diminishing somewhat, which is good, but your continued exhaustion and sense of being unwell is troubling. This is not generally part of the trigeminal neuralgia problem.
It sounds to me as though you are dealing with some kind of infection or autoimmune condition. If I were you, I'd ask my doc about these possibilities and ask him/her at least what your Sed Rate was.
More blood work (red cells, white cells, and markers for inflammation) should help figure out what's going on, at least with the fatigue.
Thank you, this is all good information.
The PVCs are the most scary symptom right now. I know I've read a lot of info on them already, and it always says they're pretty harmless, but they don't *feel* harmless. I"m hoping the Holter monitor test will put my mind at ease.
My doctor was going to do blood tests for inflammation, but then I don't think she ever did (I can't remember. I've had more blood tests over the past 2 months than I have through my whole life!) I will bring it up again at my next follow-up.