I don't want to scare you or anything, but I was in a similar situation to you last year. Being exhausted all the time. I forced myself to go into colllege... but I'd pass out the moment I got home. --- It actually turned out that my fatigue and exhausted state was a symptom of a blood cancer I had. --- Of course that's incredibly rare, but that's not to say you could still have a sleeping disorder or something around those lines. But all the same, please don't put it off... sometimes it can be more sinister than you think. And like I've seen someone else say, when it comes to applying for uni, your attendance won't looked at too well with those missing days unless you have a medical explanation which can be backed up by someone like you're GP.