Grief while pregnant?

Vicca • 💗 11/23/10 💗3/14/17 💗4/27/19
My 2 yo dog died today completely unexpectedly and without warning. He was running around all morning play with kids and having a blast and this afternoon around 130 he died. I've had him since he was 6 weeks old, he was a huge part of my family. He was my best friend and my rock and now he's gone. I'm devastated. I'm heartbroken. When I found him I sat with his head in my lap bawling. I bawled so long and so hard that I couldn't breathe and fainted. How do I push on? I can't eat. I can't sleep. All I can do is cry and stare off into nothing and cry some more. He was the best dog in the world. He was amazing. He loved everyone and everything. And now for no known reason he is gone. He was only 2. He was still a puppy. Why?