The experience you're having is not that uncommon, even if I can't be exactly sure of what you're trying to describe. So I'll make the assumption that you had an insight about the empty nature of the self. When we treasure something a lot and then realize we lost it, we tend to get a bit disoriented. This is what happens when we realize, at least to a certain extent, the the self we grown attached to is, after all, a mirage. One of the reasons why it is good to have a solid background is that when the time of gaining an insight about the empty nature of the self comes, intellectually we already see it as an illusion that harms us. I'm not sure you did the homework on that part, but that's of no consequence now.
When you realize, or at least gain some insight, about the fact that the self is a mirage, an artifact born from delusion, you lose something but you also gain something. The less grip your belief in a truly existent self has upon you, the more free you become. After all your awareness is still there. Notice it. And that is not an illusion. Even if your idea of a self was a fantasy, your sentience is not. You are aware, and perhaps the only thing- the more "real"- thing you can experience, that doesn't need any confirmation and is unmediated, is that awareness and its potentialities. Seems to me you got rid of a fantasy while gaining potentiality. How's that a bad deal, especially if the attachment to this self is the biggest cause for our suffering? Perhaps instead of focusing on the emptiness side of the issue, now you should focus on the potentialities such insight entails. It seems a good endeavor at this point.
Note, however, that there's also a way to reify the self opposite to clinging. It's rejecting it, which is a reification by the negative (and it's quite depressing). Make sure such is not happening. Our mind can be so messy that without even noticing we can take some episodes by what they aren't. A healthy ego is a prerequisite to cut through our attachment to it. By this I don't mean you don't have one. But as you seem to have lost your feet a little, checking if we're fine can never hurt. Insight and progress are always a good thing (not from the perspective of those who cling fiercely to their idea of a self, perhaps). When they aren't, we must check why and if indeed there's progress or if we're biting just another fantasy of our own making.
Whatever it may be, I wish you the best. Keep in touch and tell us how is it going, if you want to!