I'm emotionally drained 💔

I just need to get this off my chest, I got pregnant for the first time in the winter of 2014 at 16yo and gave birth 16 weeks early at 24 weeks on May 7th last year, and I still don't have any answers as to why. My daughter was so small and fragile and had to go through all different kinds of surgery, after her last surgery she started to deteriorate at 11 days old and I knew we were going to lose her, the only time I got to hold my baby was when she was dying in my arms.