My baby passed away.

Jenny • Mommy to 2 beautiful babies. One in heaven and one on earth.
On September 22 I gave birth to the most beautiful baby boy. He weighted in at 1lb 8.5ozs. He arrived 15 weeks early and had some major complications after birth.
Things seemed to be going pretty good, knowing that he would have some problems along the way.
Over the past couple of days (6 months still in the NICU) he got sicker and tonight passed away laying in my arms.
I am completely broken. Has anyone else gone though this? If so do you have any advise?