I am so sorry you are struggling with this. How had you been doing while being schooled at home? Were you still having issues? If it had gotten better then maybe your main problem is stress. You might need to get up extra early to give your body time to relax before rushing off to school. You might also consider taking calcium before bed, it should help with morning D. I know you’re young, but have you talked to your doc about anti-anxiety meds? (sorry if you mentioned this before and I just forgot)
If your issues hadn’t gotten any better with home schooling, then maybe you need to sit your mom down and tell her you’re not ready to leave the house. OR, you might end up showing her the old fashioned way… having to leave school or go in late because of your problems. Eventually, when you miss enough class, she will get it. I know that doesn’t sound so great, but you may not have another option.
"A very small group of patients with severe and refractory symptoms see more often at referral centers may be benefit from antidepressant therapy, psychological treatments."
"The chronic use of drugs should be minimized or avoided because of the lifelong nature of the disorder and the lack of convincing therapeutic benefit."