Sometimes dreams enter my waking life in the form of memories. I remember clearly things happening or emotions connected to people/places/things/events and sometimes have difficulty in remembering if it is a dream memory or if other people might remember it too.

What you may be experiencing could be mental illness but is as likely to be some sort of nutritional deficiency. Or your dreams have become so vivid that you're having difficulty in sorting your memories effectively.

Unless it is interfering with your preferred life-style, you could consider just enjoying it.