Hello Sitke,
That sounds really bad.

There are dozens of different types of migraines. I get migraine with aura but sometimes I just get the aura and not the headache.

What you are describing doesn't sound to me like any migraines I have heard about but the only one I really know much about is what I experience.

Even in the types of migraines where consciousness can be affected to some degree, like basilar artery migraines, there are other signs and symptoms that accompany it. Like a syndrome - a group of different symptoms.

What you are describing in your last post here is a condition without a headache, and I take it without an aura, without nausea, and without any other symptoms apart from confusion afterwards.

I've never heard of anyone with a migraine walking around the block and not remembering that they've done it.

Because of your history with your PCS (and TBI?) I would be most concerned!