Here's my take.
Don't listen to people who think they know it all and suggest you just "pull yourself out of it" or even accuse you of over dramaticizing for the sake of either being able to live a lazy life or to get more attention. Most people have never been through real shit but everybody is convinced they have (probably including me

).
Most important thing is to get the most out of the medical services that are available to you but it sounds like you have already been to a few doctors (not saying you should get yourself full of drugs, just saying you need to try the best you can to find out if there is anything wrong with you that is diagnosable and treatable).
When you've done that you have no other option than to accept your health the way it is and try to find goals that you can achieve and will allow you to live as worthwhile a life as possible (whatever that means).
Do you have real physical problems that keep you from being able to do normal things, like panic attacks or disorientation? If yes then you probably need medication. If no then you need to start doing something new, like trying to get a new job (if you're old enough, not sure about your age). If you can't do anything because you're too young and there is no option but school, then you need to get yourself through there somehow until you are old enough to have more life choices available to you.
Get well soon!