Re: Waking up from vibrations in my body. Feels like an earthquake.
I would think it is something close or similar to the falling waking sensation. Where you are asleep or about to and your whole body jerks and enters these little spasms.. This can be the sign of a sleep disorder and it may just be related to your sleep state at that time.
THe fact you are discribing insomnia and the need to be plum tuckered out to sleep leads me to believe you may have an underlying sleep disorder. With out a more thorough discription of your sleep routine and experiences as well as dailly routine and tiredness it is had to tell what is going on.
I do not think you are nuts, but there isn't really enough here to make hypotheses on.
I would get on a list to see a sleep specialist near you. You do have some flags that indicate it may be a sleep disorder.
If we learn by our mistakes, I am working on one hell of an education.