Off topic of pregnancy but a little advice?

My boyfriend watches porn and I DONT like it at all. But I’ve been really trying to be patient with it. I don’t ever complain to him. He knows how I feel about it but I rather know that he does it than to know he hides it. I’m 20weeks pregnant. Nothing has changed. Our sex life is still the same and good but he doesn’t watch porn nowadays... he literally searches certain models or pornstars to beat off to. It still makes me upset.. I’ve been good about it when I see it over it phone I just don’t say anything because if I do, he’ll start hiding it and our arguments are horrible. I know there probably isn’t much I can do. But if there’s any advice or little help I can get let me know. I’ll take..