migraines in back of head

I've been having migraines in the back of my head down by my neck for the past week. Went to the er and the gave me something for pain. In the meantime I've had new syptoms pop up. My fingers have started to tingle, and last night for about 2 minutes I didn't know where I was at and I didn't know who anybody was that was around me. I didn't even recognize my own kids or husband. Could this be something else. Or is it just a part of the migraines.