Hi efv!
It is good you have found this site. There are many helpful resources in the form of articles, workshops, and discussions that will help you to relieve your current feelings, get information and knowledge, and further your own aims in improving your relationship with your wife.
It sounds like you have a lot to deal with at the moment. It's great you are already immersing yourself in some literature that will help. The banner on the right of this page has some great links that I've found really helpful. No need to overwhelm yourself with stuff right away though! There's only so much we can take in at a time.
It is wonderful that even typing your message provided you some relief. Being in a complex situation with a partner and not being able to talk about it with anyone, or not knowing who is a good choice to talk to, is a difficult and lonely place to be. This site has been a godsent for me, and lots of others, for that very reason. Suddenly there were lots of people who understood what I was talking about.
What is the first thing you think you want to accomplish? Being "the rock" is not easy, I know. How is the avoiding triggers thing working out for you? Has your son been seen by a medical professional?
Keep talking to us, efv. It gets better, the more we talk.
Good to have you here.