medical advice

To who ever knows, I was told to use celexa and I have been really tired. I want my life back I have been tired since I have been one it. I never seem to have time for anything like Homework before I started taking this medicine I was always so awake and active now I sleep to much. I used to never sleep in school now I fall asleep in school even if I go to bed early. This has to stop I cant live like this. Sincerly, Tired