Stuck and Frustrated :(

Hi everyone, I was wondering if i could have some advice. I found out I was pregnant last week, I'm 6 weeks and 1 day - I'm absolutely over the moon and couldn't be happier, this will be my rainbow baby after suffering a miscarriage at 9 weeks last December, and I'm happy that I've been given a second chance at motherhood - however, my boyfriend is not so pleased, he has never wanted children and says he doesn't like them - but I have told him that I absolutely refuse to have a termination after what I went through last year, it was awful for me and that was knowing there was nothing I could have done - so going through a termination would emotionally kill me, I just couldn't do it after my miscarriage - he understands this, and would never force me to do something That would break my heart, and says he will always love and support me - and my mum and his have told him that his feelings will change when the baby is here, as he's never been a father before and it'll be different. But I still feel like I've ruined his life - I would never force him to stay if he wanted to go, but he says he never wants to leave me, but do you think our parents are right? Will he change his mind when the baby is born? I've considered his feelings but I just can't put myself through that, am I being selfish? Or am I just over thinking things :( thank you for the advice in advance - it'll be much appreciated x