Anyone going be first time mum and their partner has children already ?

Sometimes I feel that his excitement isn’t same as mine and I get so frustrated because I just feel men selfish anyway but sometimes I feel like I’m excited by myself my partner has 3 children from previous marriage this my first baby I be welcoming into world 🌍 and sometimes he says things like when I said about antenal classes “ he like oh I been those before “ not with me you ain’t 🤬 sometimes I just feel punch him in the face at times hormones or not I am going tell me how he makes me feel just wanted to know if there where any other ladies going through a similar situation 😒