I am so sorry for your loss. It is always hard to deal with right away when it happens suddenly. Difficult to accept and come to terms with, especially with him so young. But also in a way it is a blessing that he was not ill for long, that you didn't have to see his life slip away over months or years, or watch him become thin and frail. It doesn't sound as though he suffered unbearably or for a long period of time.
He was a beautiful boy who blessed your lives by being with you, even though it may not have been for as long as you would have liked or expected. The special ones are often called away too soon. Rest in peace sweetheart.
poor Boris... give him a for me!
for Tommy... for you & yours, John.