I am so sorry to hear of the death of your son, my heart goes out to you and all parents who have lost children no matter what their age.
I heard this poem a couple of years ago and thought it was beautiful, I hope you don't mind me sharing it with you.
When Tomorrow Starts without Me.
When tomorrow starts without me,
Please try to understand,
That an Angel came and called my name,
And took me by the hand.
The Angel said my place was ready,
In Heaven far above,
And that I would have to leave behind,
All those I dearly loved.
But when I walked through Heavens gates,
I felt so much at home,
For God looked down and smiled at me
And told me "Welcome Home"
So when tomorrow starts without me,
Don't think we are far apart,
For everytime you think of me,
I'm right there in your heart.