Sorry, but I HAVE dealt with Child Protective Services, and it's not just about the child being safe. When I dealt with them, in a situation much like yours but monogamous, I was literally bullied. They kept hounding me about things and when my daughter brought me a toy with a ribbon frayed, I used scissors to cut it and handed it back. They wrote in their report about how I was shaking and brandishing scissors while upset. Well, I WAS upset, they were bullyign me! But I cut a freaking ribbon to stop it from fraying! Sorry, but you can't just assume that everyone is going to do their job, or do their best. Knowing youa re innocent is not enough anymore. Protect yourself, and if that means you may have to take a break from relationships, hopefully they will understand.
Me: Late 30s pansexual poly.
DH: My husband of 19 yrs and father of 3 teen girls.
DC: LDR of +4 year