Constant shakiness, tremor

What could cause this? I developed this about 9 months ago after overmedicating myself with thyroid hormones ( I am hypothyroid ). It hasn't relented no matter what I did with my dosage. I lowered my dosage slowly over those 9 months and have now been off medicine completely for over a month. I know I should be on meds and plan on going back on them soon, but I just wanted to see if being off them would fix this. It hasn't.

I always feel shaky. When I hold my hands out they shake, a lot, no matter what. Even right when I wake up in the morning I am shaky. Sometimes when I put my body in positions that stress my body it shakes, such as bending over for something. It is not effecting my quality of life tremendously, but I know there is a cause to it and want to address the underlying cause.

Background info on me- I'm a 20 year old male, in good shape, I don't drink a lot of caffeine or consume stimulants, nor do I have much stress. This issue is not being influenced by external circumstances, like stress or anything.

[Red_Star]

Magnesium and vitamin B12 deficiency both list tremors and they are both common deficiencies of hypothyroidism. Hyperthyroidism can really speed up magnesium depletion.  You may have sugar issues/adrenal issues which also list tremors as symptoms.  Google "Recommended Labwork Stop The Thyroid Madness" for more info on what is commonly found to be deficient with hypothyroidism. I would also check saliva pH levels with litmus paper. Tremors can be from the blood being too alkaline or acidic.

[Red_Star]

I should of said a pH imbalance of the body's fluids. The blood pH is strictly regulated and while you can have certain medical conditions cause a blood pH imbalance, it will cause more than tremors and may be fatal.