try PPIs (omepraxole,nexium) for a week or such to rule out GERD

Are you taking any medications? Sometimes those can cause weird body sensations? You may need to stop/switch if so. If not maybe a neurologist should be your next step.

Good luck to you.

Had you fallen or hit your head prior to the vibrations. That can possibly be a trigger.
Mine were induced I believe by hormone changes that triggered thyroid changes. I have low thyroid.
Counting breaths and calming helps me know they are not life-threatening. I went through massive testing — brain neck spine MRIs a lot of blood work etc. Have you tried taking melatonin ? That has helped me. I do take a lot of vitamins too. The drs tried to tell me I had anxiety and put me on several pharmaceuticals that really did not help and clouded the issues.

Try counting breaths at night and listening to a calming podcast. I know I WAS worried (because I’m a cancer survivor) that something was very wrong. After all the testing came back normal I was able to calm myself w breathing.
Hoping this will resolve for you soon
Take Care

I have had the same thing since 2019. I keep a journal and record what time they wake me and, on a scale of 1-10, what level they are. This morning, 8-29, they were a level 7. They were in my pelvic area. Mine are in my torso area although sometimes I have them over my whole body. I can lay my hand on my side and actually feel the vibrations. It's like I swallowed vibrator.. They had stopped for about 4 months but started back about 2 weeks ago. I had an appt with pain management and saw a different doctor I see once in a while and here's what she told me when I told her the vibrations had started back. She said it's a blood vessel. Since blood is constantly moving very fast throughout the body, and a blood vessel could easily get pressed against something and instead of flowing freely it's interrupted and causes the vibrating feeling. When I asked then why had they stopped for 4 months and started back she said it could be caused by anything that causes that blood vessel to move....position of body change, weight loss, and I have lost around 25 pounds. They do the same as others, go away the minute I stand up and that is most definitely a position change. Sometimes when I wake up with them I can turn over and they will go away, sometimes they do not. I've not had the covid shot nor have I had covid. I'm thinking since it affects so many different body parts, some people have them in their head, hands, feet, arms, legs.....it can't be anything environmental because not everyone has had the same things as covid, covid shot etc. It has to be something going on inside the body. I've posted before I think mine is from an injury to the phrenic nerve when I swallowed a huge gulp of air while taking my meds. When I googled causes of vibrations, swallowing a gulp of air and injuring the phrenic nerve would do it. I thought back to taking the pills about 2 weeks before. I even had an endoscopy to see if anything could be seen. I hate the fact that they have started back now and I know my nights will be interrupted by them for who knows how long. I'm not a drinker nor a smoker. I take multivitamin, magnesium, E, Q10, blood pressure meds daily. I wish somebody would at least do a trial and survey to try to get to the root of this issue. There has to be a common element among all these people that are experiencing this. If it isn't environmental, because there aren't enough things in common, then it is physical and I would LOVE to find something I could do to make it stop.