I had an EMG on left arm and leg on August 6th, which was…

I had an EMG on left arm and leg on August 6th, which was clean. The electrical part was on all four limbs the needle part was on the left side only.
I have had a head and neck mri and spinal tap which didn't show any problems. I have had many blood test done, including thyroid, calcium, potassium, magnesium, and electrolytes and many other levels checked and they are all ok. I take vitamin supplements always. I had vitamin D checked and it was low, but I've been taking supplements for that for about a week.
I noticed right arm symptoms around June 12th and they have gotten worse.
My current symptoms now are spasms/twitches that come and go in the palm of my right hand, especially near the meaty part of my thumb. My thumb feels slightly stiff, along with my ring finger when moving it. My forearm feels constantly cramped and I have spasms there quite often. I have muscle fatigue in right bicep area and also my upper shoulder and neck area and have spasms/twitches in my back, upper arm and shoulder. This is throughout the day, everyday. I also feel a lot of fatigue throughout entire right arm, even when doing simple task like putting on makeup and brushing hair. My right arm also is more shaky then my left arm.I also feel like my right hand gets cramped up and weak when holding my phone or driving and holding the steering wheel.
Please let me know what you think it might be. Thank you!