I get occasional migraines with visual disturbances, nausea, intense pain on one side of the head. In fact, this week from Tuesday into Wednesday I had a 36 hour migraine.
After each child (4), I had a two/three week span of frequent migraines, most likely due to decreasing estrogen levels following child birth. Maybe that is what is happening to you.
I don't know what a spiral migraine is and hope to not find out.
Good luck to you, I hope you get to the other side of this migraine phase very soon.