I think I made a wrong choice 😫 😳

Hello ladies, my husband and I have been together for 2 years I have a bby girl who's almost 3 and is not his . But he's been there for us since she was 3 months. I told him this is the year and We're going to have our own bby . He said yes . But I'm scared. So I told him I was too when I had my bby . Later on he kept changing his mind between yes and no and maybe wait and then yes again .. we've been having sex and I told him when I ovulated and everything ... but today when I told him I'm waiting to test he gave me a wired confused look. As if he didn't want this.. idk what to think now. If I'm pregnant should I tell him?! 
Help please reply please any adivise helps ! ❤️🙏🏼