Massallah pertaining to Kufr

Regretfully I masturbated today. At the time I had conflicting thoughts in my mind. One was, this is good even though its wrong and the other was me consciously trying to make myself think, although I am doing this, I must acknowledge its wrong as its kufr not to. I didn’t succeed and hence the first thought prevailed and I continued masturbating. I thought sexually about my wife, her body etc and what sexual things I would say to her regarding what I enjoued during sex. Now I am worried. Would this be kufr?