Bothered by “rainbow baby” term

This pregnancy will be my “rainbow baby” but idk why I don’t like that term. Everyone keeps congratulating me on it and using that term. I get the meaning but I also don’t want to see this baby as the “good” and forget about the baby that I lost. And I’ve just had overall mixed feelings this pregnancy. I want to be happy but I still feel like I’m grieving my loss. Can anyone help or change my viewpoint?