I am tired of getting sick at new place!

In four month 5 times i suffered from fever, cold etc + got skin infection... Doctor given me 45 days medicine course!
4 days i suffered from high continuous fever which left me made me weak like i can't walk 50 meter.... I was on bed rest from a week!
I am tired of eating medicines.
I ate 16 medicine per day so i can attend class!
My studies got totally ruined....my concentration, my motivation all!

4 times i didn't stopped, but this month was worse and now i am left behind from class!
I don't know how to cover backup!