I have been experiencing over the last few months very odd symptoms. My core feels off balance internally (but not demonstrated in my gait). I feel not so much fatigued/tired but run down as if I were recovering from a virus. Additionally, I am experiencing muscle weakness, some shakiness and more recently rapid heart beat. All these symtoms are not happening at the same exact time, ebb and flow throughout the day and I have better days than others. Recently I had a complete blood workup and the only thing uncovered was elevated cholesterol and pre-diabetes. They took 7 viles of blood so my sense is that it was very comprehensive testing. Please let me know what you think this might be and what type of physician should I consult with next. Thank you.