Feeling down 😔

My sister just told me she's 8 wks pregnant with #4. She's been off of her birth control for about a yr and wasn't trying or planning it. It's been 3 yrs for me ttc for #3. I am more than happy for her but I felt like crying bcuz I've been planning mines for so long. It just hurts. Praying my rainbow baby will come soon. We also got pregnant around the same time 4 yrs ago our kids are 3 mo apart.