why things happening to me?

this few weeks i m having flu fever wheezing.. And causes me sleepless night.. But before i m sick i already cant sleep o well in the nights.. Normally i sleep around 3 o 4 am each nights.. I tried alot of things to make me fall sleep.. Such as taking medicine which makes me tried.. So that i can sleep well o early.. Drinks beers whisky o what so ever also cant help me.. I kept on think things about me and her.. I go to place like the library o shopping mall i straight automaticly think about her.. I don know why.. I suffer this alot.. Cant eat sleep do well in things.. Changes alot pass few weeks.. Likes to be alone,hot tempered d.. Haiz.. Don feel like doing anything but i will kept on think about her.. I don know what else i can do.. Just wanna say sorry who get scold from me.. I m sorry guys.. Know that she not going back to me.. But i cant ever stop thinking about her.. I just cant no matter what.. Ppl say can forget but i don think i can do that.. Maybe i m special case a bit.. Just wish she would be back.. Thats all i can stand for now.. Nights guys.. Good luck for the results!