I can tell that your experience was a valid and important one; please know, first and foremost, there is never anything to fear with regards to the realizations that you're beginning to have. This isn't to say that you won't feel fear on certain occasions, only that when one is properly awake for the whole of any given moment, even fear is valuable. It takes quite a long time to see just how unreliable is our confidence -- our certainty -- but there comes a time when this order of discovery makes it possible for us to be touched by true humility. And, as a great man I once knew (Vernon Howard) used to say, "your humiliation is your salvation." As for the rest:

It isn't surprising at all to hear of the various phenomena that took place with your interior experience; literally anything can happen when it comes to the way in which our individual brains register the various forces that are at play within and around us at all times. Don't be concerned about this apart from giving each and every one of these moments as much awareness as you can. Gradually, as you have these kinds of experience, you'll be more adept at watching without worrying about what's going on or happening to you. In truth, what's taking place belongs to a broader order of reality, and our "self" that seems to be at the center of these things is really just a reflection of them as produced by reactions and the thoughts that dress them.

Lastly, and in relationship to the last sentence I just wrote, there is a tendency on the part of the false self to glorify anything and everything that happens to and around it; it's just a part of its undeveloped nature. In time you'll discover that in a moment of any real insight, this insight is usually the effect of something that has already acted to change you, and so the self that registers it is actually after the fact. Knowledge of the order of this relationship gradually releases us from wanting to think about -- i.e. explain to ourselves -- what's taking place within us. The simple truth is, we can't know. Our task is to be willing or, said differently, to surrender.

Persist with your inner work. Let nothing interfere with your wish to be free.