I Cannot Stop Sleeping!!?

Alright so early this summer I never wanted to fall asleep and was normally getting around 6-7 hours of sleep but not anymore! I am sleeping 10-12 hours daily amd keep feeling obligated to go back to bed. I am not even tired yet half the time all I want to do is to go back to sleep. I also am having super crazy dreams! I normally dream often but I always would dream of vivid logical things that I could later recall. Since I have been sleeping so much for the past week and a half I dream every night and all I remember is that I am dreaming super duper illogical crazy things. Does anyone have a clue whats going on with my crazy sleeping patterns?!