Can't be excited for sil pregnancy

Soo just found out I'm.going to be an aunt again (yay), but after having a miscarriage of my own almost 2 years ago, I don't feel excited for them... she is very early, US isn't even showing a baby yet and she announced it.... don't get me wrong I'm happy for them, but I wish she would have waited at least until they could see a baby in the US. Hopefully it's a healthy 9 months for her, but I wish it was me