I agree with Mamma Lama. Imitrex may not work for you but there are so many other things to try. Missing that much school means this is a serious problem so please see a headache specializing neurologist.
Nail patella syndrome, osteoarthritis, complex migraines, eosinophilic esophagitis, major depressive disorder, OCD, and fibromyalgia.
Meds: flovent 220 mcg, flexeril 10 mg, zonisanide 100 mg, omeprazole 40 mg, Cymbalta 60 mg