I also get the vibrating sometimes, but not in my head, just my legs and feet and sometimes my upper body also. I have no idea what it's from, either. I only seem to get it when I am tired or sleeping or wake up from sleeping or a nap. It is part of this "crash" feeling that I get sometimes. I am now 8 months post-removal, and while it has gotten better, it still happens. As a matter of fact, it happened this afternoon and I had to sit down and ended up napping for about an hour. It's really getting old. I also have a doctor appt. on Jan 6, and I am also going to mention it then. I honestly believe it is caused my Mirena somehow. Good luck and keep us posted.