i hate my choir class

i hate everyone in my choir class,, i feel so upset whenever i see the ppl there. they make me feel nauseous, and everyone hates me there. i just feel so out of place, and my mom recently found my grades, shes been so upset over it. im always sick, and i dont want to look her in the face anymore. i dont wanna see how sad she is. i feel so horrible, she found out about this person i was talking to, and i told her i stopped talking to them, but she wont believe me, i dont want to go home and have to look her in the face. today is the worst day ever, i feel disgusting.