FTM here and the pregnancy definitely wasn't planned, considering my boyfriend already has a 2 year…

FTM here and the pregnancy definitely wasn't planned, considering my boyfriend already has a 2 year old son from his previous relationship, but I'm feeling like my boyfriend isn't as excited as I am, that his son always comes first and it's stupid but I'm beginning to resent him and his son, I've even debated leaving him. I need the father to love my child just as much as his first, not rate me and my pregnancy as less because he's "already done this". It's all new to me and I'm stressing out.