I also get ocular migraines, which don't include head "pain" per se, but leave me feeling pretty wiped out after. They come in times of stress, poor diet, and sometimes just out of the blue. I can best describe them as the light appears to be reflecting off those metallic pinwheel toys, but just outside of my peripheral vision. Then things tunnel through the center of my vision, so that I cannot focus on whatever I am looking at. I lose the ability to concentrate and continue conversation, but maintain enough control to explain what's going on. After ~30 minutes, it goes away, but then I need to sleep.

However, the suddenness of this, plus the numb extremities makes me add to the chorus that you should get it checked at the ER, roadtrip. And then, when you're safe, check in and let us know you're ok.