When you get overlap like that, maybe start saying to others and yourself, "I must have dreamed that." That will tell your brain, conscious and unconscious, that you are paying attention and sorting things and so it might do that for you automatically so you don't have to "self-correct" so much.

It's not bad or dangerous or anything, just annoying but your mother will know if she came into your room last night (action as opposed to just "thought"). If you start remembering whole sequences of things you did, physically (my mother came into my room last night and we had a conversation about X where she said Y and I responded Z. . .) then you might have reason to worry but just little deja vu sorts of experiences where "my mother came in my room last night" and "I thought I'd seen that list before" happen to everyone all the time.