As you continue to awaken multidimensionally you can expect many 'memories' to bleed through into your reality.
These bleedthroughs are real multidimensional experiences that are occurring on other levels of reality. They could very well be other lifetimes.
There will usually be some sort of synchronising process happening with these experiences. 4th dimensional consciousness operates on the laws of frequency and resonance, so these 'memories' will have some relevance to experiences occurring in your present day life.
Try not to become emotionally swamped by these experiences, they can be interpreted by you as 'good' or 'bad' and possibly very intense. No matter who you were in other lifetimes or on other planes, the present moment is what is important.