I'm a 12 year old girl when I was about three years old I was sexually assaulted and I've never told anyone what should I do?

I'm really sorry to hear that you've been through such a painful experience. It’s important to talk to someone who can help you, like a trusted adult, school counselor, or a therapist. They can provide support and guidance in a safe environment. Remember, you are not alone, and there are people who care and can help you through this.