Can't sleep

I really wish there would be a reasonable reason for my sleepless nights. Reasons like exams, essays, personal problems, projects o at least a failed love would be more acceptable for keeping my self awake rather than by mosquitos!!! It's the worst thing EVER!

My biological clock doesn't permit me to go to bed before 12. I take at least an hour to get prepare, do my prayers and actually get some sleep. But before that last action, I start hearing buzzing next to my ear, and next thing I feel is at least three mosquitos bites all around my arms and hands! I have "autan" spirals and my fan on, and that doesn't stop them. I even wake up to see if a can kill some at 3:30 am; but they can sure hide away. Also, they seem to be like Bruce Willis in Die Hard: when I think that I've kill one, NO! THEY'RE ALIVE! they keep flying and buzzing!!!! I end up sleeping a few scattered hours. I HATE THEM!!!!