She had sex with her stepson by sending him naked pictures on mobile

Every time I argue with my mother, I end up sleeping with her. When we were left alone a few years ago due to my father’s death, we started having sexual relations with each other, but we always ended up feeling bad due to remorse. Now we do it as if it were the most normal thing in the world, although my mother still doesn’t like that I finish inside her vagina for fear of getting pregnant by her own son.