just need to vent 😭😭

Today my heart just broke. 
After a year of trying after our first loss my brother in law announced their pregnancy after telling the family they weren't trying for anymore kids... 
They're excited and I'm happy for them but I can't help but cry .
What am I doing wrong ? 
Working out ,
Taking vitamins 
Mediating 
Not tracking too often 
Just have to remember to be happy for them but it's so hard 😞😞