My mother once saw her own doppleganger. Doppleganger is a German word that means "double walker".
The usual scenario is that once a person has seen their own doppleganger death will follow soon. Au contraire in mom's case. Mom was nine when she had a terrible bicycle accident. She still has gravel in her knee where she hit the pavement at full force. She was told not to ride down a steep hill. Not only did she ride down it but she took the little girl up the street with her. Fortunately the other little girl was not injured. My dear mother was tore up from the floor up.
Among her many injuries was one where her uterus became inverted. The doctors said she would never have children because of it. Mom was quite distraught over this as she grew older and wanted children of her own. It did not help her longing for kids when her friends started their own families.
Mom and Dad lived in a tiny apartment in DC. Mom was in her chair watching tv and doing needlework when something caught her eye. She was absolutely stunned when she saw an apparition of herself in the doorway. Not only a vision of herself, but a pregnant version of herself!
She watched in disbelief as her doppleganger walked across the floor and into the kitchen. Without hesitation, Mom gathered up her purse and keys and ran out of the apartment. But, what was the doppleganger doing? She certainly wasn't in the kitchen fixing lunch for Mom.
I will answer the question this way. My older sister was born 8.5 months later!
Was it an actual spirit or just a projection of her own mind telling her not to worry?