Annoyed with my S.O

Currently in my second trimester and last night my S.O and I got into an argument about our mothers. He doesn't like mine and I damn sure dont like his just for the simple fact she crossed the line with me one night said some hurtful things to me brought it to his attention and he completely disregarded how I felt all together . now when my mother said something all of a sudden she's not invited to MY baby shower ? Granted my mother was wrong but that's still my mother she's going regardless. I told him if my mom can't go his better not show up either I brought up the incident with his mother and he said he doesn't care. Mind you my mother apologized and was sincere I'm still wondering if his mother is going to pick up the phone and apologize to me since the only time she calls is to remind me of how much her son does for me and the baby as if I just sit on my ass all day I work just like he does standing up 8 or 9 hrs a day while pregnant