panic or anxiety

What could it be 6 years the same things are happening!! My drugs don't work I am just so tired I can sleep always. It all starts in the morning I feel good or I feel shaky!! And then I know how my day will be. the naseau starts the lightheaded and I feel like I will drop t the floor. Then My heart goes. Sometimes my face goes so numb it is so scary. I will have company and I feel like I am in space. I use to take 6 mg of adivan a day now I take 2 for the last 2 months and I still feel crappy. I get checked for everything and they find nothing!!! But I feel like they are missing something. I feel outof controll!! I have and still go to counsilling I try breathing and to keep busy but thay manage to find there way out. Sometimes it can last all day and then the next day I am wiped out. I am not sure if the meds are wrong or if it is long time use of adivan!! Or just a disorder I have. I go to the bathroom allot and sometimes I just loose my appetite. the worst is being so tired no energy that really sucks. I know there is many people with this but I feel trapped and I don;t know what to do anymore.