Is this really a felony and if is real

Hello so i have a i been investigated fot child pornography. I meet somone in a site called ok cupid she talk to and begN to meet her nothing explicit then ahe ask me to txt her so we txt again nothing explicit we sent regular poct after that one day she told me that shw wanted to see my dick and that she was masturbading with me all night. She send me first a naked pict then another two poct only with bro and short then ass the masseges where going she convice me to send her one too so i did and after like a few hours after somone massege me saying that the person was under age. And that his wife was in jail bc of me and i need to help him pay for her to get out of jail. I never meet the girl before no even ever hear her voice i mean for all i know all of this can be set up into a mke a mostake and the catfish me. So no a private investigator is contacting me saying i have to give him 1500 dollars before the end of today or he wil call dispatch to arrest me.