Help me understand..

Tatiana • I have a son and a daughter 👫

My baby girl just turned 8 months, I also have a son who’s birthday is the 21st. We got the worse thing that can happen to our perfect family of four... my spouse passed away on Thursday with no real reason and understanding, the doctors couldn’t diagnose it.. we have some ideas how but.. my world changed, my heart aches for my children and me. I’m scared to move on in life without him ever being there. I lost my best friend.