I lost my brother when he was just 22 years old. That was 11 years ago, and I still miss him terribly and cry often. I can't imagine the pain of losing a child. It's too much to even think of. My parents were never the same again. A part of them died that day, too. We began to measure time with phrases like "before Joel died" and "after Joel died" because it was the most significant event in our lives.
Hugs to you from another one who's lost a loved one much too soon.