How can I recover from sickness like the Flu?!

I don't know how to overcome sickness..I've missed two days of school and I've heard I've missed A LOT. I've tried hot foods, cold foods, popsicles, chicken soup..etc..I've even gotten in my parents sauna like three times. I've taken Robitussin..My mom called the doctor today and we are waiting for them to call back for any openings. I'm gonna get a check up but tomorrow's Friday and I CANNOT miss another day of school, I hate missing school work. How can I get betta by tomorrow?
HELP ME