Partner is showing no interest 😢

Want your opinion ladies had a missed miscarraige in April & found out I'm pregnant again I told my partner a week ago & he seemed happy but few days later his mood changed he didn't bother messaging me that much asking how I am or even spending time with me he was so different with the first pregnancy we unfortunately lost but he's so different with this one , I go to show him bits on the app he isn't interested booked a early scan as I'm worried same thing may happen to this baby but he wasn't bothered about that I just don't know what to say to him it's like he's pushing me away I've told him I don't need the stress and his mood stays the same, is anyone else going through this or are there partners different ?