Vibrations and tremors in the body when relaxed – psyche, neck or cervical spine?

Hello,

For context, it would be useful to read my question beforehand.

I've been experiencing symptoms for the past 1-2 weeks, but I can't/won't explain them to my doctor because he blames everything on psychological issues. My physical therapy starts in about 2 weeks.

My body shakes and sways when I lie down. But it's not visible externally. So it's probably something in my head, or caused by weak, tense neck muscles, cervical spine instability. When I tense my neck, it stops. When I relax, it starts. It's most severe shortly after falling asleep, and I'm woken from sleep. Pressure on my neck reduces it.
I had the same thing the day I started having symptoms, which is why I had to go to the emergency room. At first, I thought it was something related to my heart. But it's independent of the heartbeat.

Since my family doctor does not believe that cervical spine realignment causes such problems, he prescribes me sedatives and beta blockers (my heart has been beating normally again for several weeks, no strange feelings in my heart, resting pulse of 60)?! However, my friend (doctor in another country) advises me against it and my common sense advises me against it too. A panic attack should be accompanied by shortness of breath, panic and fear, which I do NOT have. But the doctors do not believe me?! Always the same questions: are you stressed? No. Death? No. An accident? Have your cervical spine realigned. This is not an accident and evidence-based science and medicine say that cervical spine realignment does not lead to these kinds of symptoms. So you are physically healthy.

This is how conversations go.

My theory: Cervical spine misaligned on one side: Blockage on one side released: Imbalance: Cervical spine unstable? Or muscle tension? Nerve irritation? I'm leaning toward instability, since everything goes away when tension is applied. Even when standing, I have mild symptoms as described above, which go away when I tense my neck.

I also have Scheuermann's disease.

Anyone with similar experiences? Should I go to the doctor and beg for a CT scan to rule out damage to the cervical spine? (A herniated disc in Scheuermann's disease is possible, but I don't have any discomfort in my arm, so it's very unlikely.)

Or should I wait and tell the physiotherapist everything? I don't know how much she can do with that, though, because the note says: recent cervicothoracic blockages and damage to the movement segments.

Remedies: MT and fango

Additionally, my neck cracks and creaks like crazy, even with slight movements. I hadn't noticed it before, or at least not noticed it. But I think I've noticed such cracking noises.