That stating your parents care about you, but you don't have anger issues. Your mom is raising your stress level higher than you expecting it to be and that causes crazy anger that some people like to call 'Anger Management"...
A bit confusing but, you don't have Anger Management. Trying telling your mom to give you some space and get it done later.
I wouldn't consider that anger problems. Fasting can cause anger, though. Do you have anger problems when you aren't fasting?
Your mother does care and appreciate you. If she didn't, she wouldn't be so worried about your grades slipping. She your best interest in mind.
Other then that, just try to go to a "happy place" in your head. Whenever my mom screams at me, I just tell my self "don't get angry". I let myself know that raising my voice will not do anything to help the situation, and that it will actually cause a negative reaction.
I hope everything works out for you. Good Luck!
- VR
Thank you every one for your help, I am trying to get along with her better now =3