How can I make my mom believe me that I'm sick.HELP?

[Listerine]

I have one of those moms. Who just thinks I'm "faking" I need help. I've been sick for a week and my mom doesn't believe me that I still don't feel well,I don't have a fever but I'm really cold I have a runny nose and 2 ear infections,a head ache, stomach ache, and I feel lazy. She gives me this odd med, that makes me vomit a lot. I get a lot of sleep but yet I'm tired and she FORCES me to go to school.But the nurse is a substitute and tells me I'm fine and to go back to class.I can't even pay attention in my classes because of this. ): Help