What do I do if I suspected a family member has sexually abused my son? He is only 4 and has had a complete turn around in his personality and has many of the behavioral signs. I ask him about it and he doesn't tell me anythingDoes anyone know the first step to get help? I'm not sure if it is happening with is biological father on visitations or with his grandparents.

Do not jump to conclusions it may not be sexual abuse.
Do you get on with your ex and his family children pick up on things and it could be he is confused.
Maybe he hears different things from you then from this father.
But I do not know where to take him a doctor perhaps

What do I do if i suspected a family member has sexually abused my son? He is only 4 and has had a complete turn around in his personality and has many of the behavioral signs. I ask him about it and he doesn't tell me anythingDoes anyone know the first step to get help? I'm not sure if it is happening with is biological father on visitations or with his grandparents.
Go to the department of child welfare- they are trained to get at the truth...