I miscarried and doesn’t seem like it’s effecting my bf

I miscarried at 11 weeks on Friday . I’ve been so distraught since . My bf and I didn’t plan to have a baby but once we found out we were so excited . My miscarriage happened and I told him about it and he was sad and crying . However , seems like he got over it pretty quick . Don’t get my wrong he has been very supportive . However, seems like since my miscarriage he’s been completely fine and has returned back to being regular . Even today he told me he might go to a party later but he’s not sure bc it depends how he feels after work . I didn’t say anything but I def felt a way that he could easily just go to a party after losing our child . Even contemplating going just blows my mind . It’s like he can’t miss one party for the week? Idk maybe cause I’m over emotional I’m over thinking it maybe ? I’m not sure . But I kinda feel a way that he is even if thinking of going . Am I wrong to feel this way ?