What is Called ? Is it a Disorder ?

i have something that i feel very often , no special occasion . e x a m p l e s : when i wake up in class and realize i actually fell asleep in there ; when i said something awkard ; when im around people im not usually around ; when i wake up in a hurry . this feeling has been around since being a kid . i dont know what it is called . and i am scared everytime it happens , it is like i dont know where i am , when someone asks me something or talks to me i give them weird answers . please dont think im pyscho . i just dont know what it is called and im curious why it happens and what it means. it feels like im drunk almost but im only a 14 year old girl !!! i dont know how to explain better but pleae help . thankyouu ..