What is wrong with me?

So my tonsils have swollen up 3 times in the past two months, the doctor thought i had mono, but it turned out i didnt Lately, all ive been wantig to do is sleep. I cant even concentrate on school because i always want to sleep. Ive also been coughing up alot of stuff, and having really bad headaches. I get at least 9 hours of sleep every night but i fal asleep in school & i go to sleeep when i get home from school. What does this sund like?