I Had My Thyroid Out 10 Years Ago And Have

I had my thyroid out 10 years ago and have struggled with severe twitching and exhaustion. The twitching doesn't happen all the time but when I does, I am not able to control it and it becomes more like tremors. I used to work out a lot prior to my surgery but I am exhausted most of the time. Are the twitches a nerve issue, and are their foods or vitamins that can help?