Types of migraines differ as do body chemistries. I tried weed for a low-grade attack and it only made things worse. Whether it actually made the headache more intense or made me more aware of it I'm not certain. Imitrex has so far been the only reliable migraine ender for me (a heavy dose of anti-inflammatories can take care of a low-grade attack occasionally). One thing to consider is that medications like Imitrex are vascular constrictors for brain specific areas while weed increases blood flow to that region. Although some report that weed helps their migraines, you clearly are not one of them and should try another method.