Being threatened to issue talaaq

My wife took sexual pictures of me without my knowledge. It was haram in a way that my private was exposed without my knowledge. One day we had an argument and she showed me the pictures and threatened me to talaq her. If not, she will expose the pictures on social media. I was shocked and asked her to delete the pictures but I was also afraid if she saved it somewhere on her phone. She did not want to delete the pictures and threatened me to talaq her. I was afraid and scared she will upload haram pictures of me that will not allow me to face my family and humanity. I told her her I talaq you, does it count as a valid talaq?