Gland Disorders Forum - hyperthyroidism symptoms ?

I am 19 years old and for over 2 years i have been suffering from extreme anxiety depression. However only untill recently i have been experiance frightening symptoms that i need help with. About 2 months ago i would get a mild choking feeling, but usually was gone withing a few hours. Now, i feel as if its all the time, its very very mild. It feelslike my throught has something stuck in it or pressure. I have no trouble breathing or sleeping. The skin on the lower part of my throught feels very tender and smooth. Pretty much were the collar of my shirt goes. My ears also feel like they want to pop or will pop. No sound loss however. I have been smoking about half a pack a day for the past 3 years. I don't drink or do any other drugs, nor have i ever.

Now that i have the recent symptoms explained i would like to explain my history. For about 2 years i have had a unctrollable shaking in both of my hands, wich only shake for a second or less once lifted. It doesnt do it when im not moving or walking, it almost seems like the same type of shaking you get when really excited. My heart also always pounding, moving my whole body along with it. Sometime at night lying on the bed i can feel the bed moving. I have also been experiancing "brain fog" . Wich doesnt seem to effect my memory. My feet and fingers also get cold at times. I also go into blank stares. After a few months of dealing with this i went to my docotor (This was over 1 year ago) and explained everything. I was put on Lexapro for depression and that did nothing, except keep me up at night... but any Lexapro user can tell u the same. I went back in and had a MRI of the brain, chest x-ray, blood test, urine test and a full eye exame. Everything came back normal.

Sence then i have lost about 20 pounds. 2 years ago i was 5'10 and 165lbs now im 145lbs. Im what u would call a hypochondriac as well, i have been sitting around for 2+ years now with these symptoms and havent worked a job or even kept a social life.

At this point i am very lost on how these physical symptoms can still occur when all these test come back normal to a hypochondriac like me. I came accross a condition called "hyperthyroidism" a few nights ago and read up alot about it. I was stunned to see the symptoms of this, almost seems they made this up after myself haha. I'm sure i shouldnt be here explaining myself with these symptoms but instead at the doctors. Being that im now almost 20 and unemployed i do not have medical insurance nor can afford it. I would like for anyone who has experiance or suggestions on my problem to please respond. I'm at the edge of my seat and am getting mental depressed more and more everyday.