I found out that Iam traumatized

What’s up, everyone? My name is Eli. Yesterday, I had a dream about my childhood, and I remembered a hidden, brutal, sad, and disturbing memory from when I was six years old—something I had completely forgotten. Then I realized how deeply this memory has affected me. I’m feeling very sad, and I really can’t talk about it with anyone. Can anyone please tell me what I should do?