that is not an normal migraine symptom. losing speech is not an aura. i would strongly advise you to see a neurologist about this episode. expect an mri of the brain.
why couldn't i talk while having a migraine? is that an aura too? . i thought i might've even had a stroke because i had numbness in my left fingertips and i was throwing up but i heard of an aura and i think it might be that. i wasn't able to physically make out words but i was completely "there".