Home remedies for preventing

I have a final exam (retake) for my masters tomorrow. I currently have a migraine and can not think, remember, learn, or study. I can not concentrate. So I want all the home remedies and trick advice to get in a better place by the morning.

(Note I have had a migraine for 500+ days straight. This is normal for me to cycle thru pre, attack, and postdome. I have a neurologist and do not take any medication because I have chiari malformation. )