The first time I experienced The Ohm/Void/Nagual, I felt exactly the same way: panicked. It was so immense, alien and overwhelming that my mind couldn't encompass it. I felt the only way to survive and remain sane was to run away.
That feeling stayed with me for quite some time before I was able to convince myself to seek that experience out again.
Once I embraced the experience, I was able to put my fear aside and travel there at will. In doing that a whole new level of understanding opened up for me. I am still uncomfortable with the experience to this day, but the more I travel there, the more I learn about myself and about our Universe.