How Do I Report The Possession Of Cp And Distribution Of It

im honestly in a lost for words, everything seems so unreal at the moment. Im going to keep it short, i was going through my boyfriends phone out of curiosity and i found several links to files with CP and conversations with the intent to distribute. I just had a baby with this guy, it hasnt even been over two months and i have no idea how to feel. I made sure to take video evidence of what i found. I just want to protect my daughter, how do i report this and make sure it gets delt with. I know i can call the center of exploited and missing children but how serious will they take me? i can not confront him about this because hes the type of person who blows up and will make sure my life is hell to ensure i will be quiet. I need to know how to have him legally delt with and how i can fight for full custody of my daughter. Luckily hes not too involved with her, he doesnt change her or give her baths. i never imagined the monster of a person i had a baby with, i dont know if im full of regret or not. I love my daughter but if i wouldve known i wouldve never had her and i hate that im allowing it to make me feel like this. If you have any support groups please let me know them. im sorry if long i just dont know what to do.