My mother had a miscarriage, and she said later she consulted a clairvoyant priest who told her she had four.?

Outside of any science or religion, taken into the world of the energetic realm, your "brother" could have decided not to incarnate at that time, and so your mother had a miscarriage. This energetic being could be connected to your family and would still be "aware" of you at any time he chose to be, which means that you could also be "aware" of him. If you like to read, try such books as "Seth Speaks" or "The Field" by Lynn McTaggert. The Field is purely scientific. It will give you some interesting concepts that are at the very least thought-provoking.