Any oppinions?

So I have been more then unwilling to except this disorder of anxiety... I feel like I am a happy person, I am not depressed. All my symptoms are: when I wake up I feel shaky, but I am not physically shaking, dizzy not a spinning dizzy, but the feeling when you sit up too fast BUT ALL THE TIME. I feel like I am not in my body sometimes... I dont know. This all started about  6 months ago when I was in class and all of a sudden I got sort of dizzy and my heart started racing, but i just ignored it and thought that I was just being dumb, well i went and got my thyroid checked and thats what it was I was diagnosed as hypothyroid.... I then got really sick towards the end of that week I was sitting in bed and all of a sudden I got really dizzy and my heart was going fast, so i freaked out and went to the E.R and they said its  Labyrinthitis... well i went to a specialist and they said no its not labyrinthitis... So after two months i got my thyroid finally leveled off and I still felt dizzy and just weird a huge brain fog.. I have been scared of my roommates leaving because I dont want to get that feeling again when I was in bed where I needed to go to the E.R... I am now on Zoloft 25 mg after a week and I get that feeling in your mouth where you feel like you need to puke but i dont.... and I dont know its just that I have been dizzy and thats the only thing that bugs me... I just wish it would just stop because even now when I am writing this I feel weird... just lightheaded.... thanks for reading this and if you know of anyone that has been through this could you send them this way... I just want advice and another oppinion and you sounded like a good source... Andy