I am so sorry for your loss, you have found a very supportive group who will listen to you as much as you need!
Anger is just one emotion that you will feel during your journey, it will come and go, so feel free to vent it. All the emotions are better out than in - I have found anyway!
I have made sure that everyone knows I want to talk about Jemma, my angel, as she is a part of me and she is my first child. It makes it easier for them too because then they don't feel like they have to be careful what they say around me. Talk about your son as much as you want, he is your son and nothing will ever change that!
((HUGS))
Thinking about you, your DH and your other children.

Sarah