I feel responsible

I found out I was pregnant, and a few weeks later my sister announced she was, too. I was so excited for cousins close in age, but at the same time, I selfishly felt like my pregnancy was overshadowed. Now she found out it wasn’t a viable pregnancy after all. I feel absolutely terrible, like my negative energy caused this. Has anyone ever felt this way? So sad. Also, anyone know how I can support her? I feel guilty being the one that’s pregnant now. I hate this.