Can't Sleep

Can't sleep but that's nothing unusal with me. I didn't go to college yesterday as I didn't fall asleep until two fourty five PM. Its really starting to get to me and I'm missing too much college. I have yet this term to go a full week in college. In the first week I went only Monday, the second Monday and Friday and last week everday apart from Tuesday. People are questioning why I haven't been on and I just say that I have things to sort out outside college. I have my reasons why I haven't been in depression, harming, lack of sleep, fear of going outside and ana.