Crimson- I get signs all the time, too (it's been awhile, but I get more when I specifically ask for them). They aren't subtle, usually, and on more than one occasion one of my friends has looked at me afterwards and said, "that can't be a coincidence". Use them for comfort, at the very least.
The anger and resentment is normal. Let yourself feel it and move it out. It sounds like you have made quite a transformation. Be proud of the work you're doing. Your son will be.
Me: 39 H: 45 Second marriage for both H left 12/2013 M:4 T:5.5