假如你是Jeff,你的朋友Nick病了,请写一封信 怎么写

Hi Nick,
I heard that you get a bad fever from my dad.I am worry about your health,and how did you get the fever?You should wear much more clothes,man.I will see you next week in your home,take care of yourself.By the way,when will you give my money back?
Kind regards,
Jeff