My boyfriend drinks every weekend😔

I've always had a problem with my ex husbands drinking. Even though he didn't drink excessively it still bothered me. I'm not a drinker and only drink occasionally. Well my boyfriend now which is the father of my unborn child drinks every weekend. He does it here at home or when we go out to eat but he does drink until he is drunk or tipsy... And it just bothers me. I know I can't change his ways... He is not violent with me but he stays up all night and in a way it worries me. Not so sure how to go about this