Have you ever gotten a message or sign from a loved one that passed away and you knew it was them?

One time I dreamt about my paternal grandmother. I got close but she was - like in a hard bubble. She asked about her son, my father. He was not at home. She told me to tell him to get the papers straight, Just then a man who looked like my father stood in the doorway and filled it; and my grandmother disappeared. When i told my father the dream he laughed. He told me the man in the doorway had to be his father and why his mother had disappeared.

I try not to think about this much but I have had "weird" dreams 'before' the death of someone I knew ... dreams are just plain weird ...