I'm sorry that your h still isn't all there. I hope your son is doing better, but it's going to take a while before that injury feels much better.
I thought you had a conversation or should I say, speaking to the tree, about texting when you are in the next room. I would so not open those text messages and make him come to you if he's got something to say. This is so annoying to you.
As for what you said to him...sometimes we have to say what is on our minds. A truth dart here and there won't hurt them one bit and he's a grown man, he'll eventually get over it.
BTW, I'm glad to read you like your new job. It makes the day go quickly and you can "escape" from the madness at home for just a bit and actually enjoy the work.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.