Okay, let's look at that. This isn't criticism at all, HH. what you're going through is really hard and there's loads to untangle. There are no 'wrong' words. Take a breath and think about why you think there are any 'wrong' words. Who are you trying to be right for? Us on the internet? Fuck us. You? That's good that's important. Him? doesn't matter if it's right if it isn't honest.
Okay, so it makes you feel really anxious and insecure. Like you can't convince him. So essentially these are all expressions of powerlessness. It makes you feel out of control. And that makes you feel bad. So the problem is the control again. But maybe the solution to that isn't to try an gain more control, but to let go of it all together. To let go of that need. This is a big thing and not one I expect you to take on right now.
Also, you have 100% decided that you don't want to not stay with your husband.
Think about that. Think about what that says.
You are staying because you can't bear the alternative.
You want to stay because you don't like the alternative.
Please please don't look at these as criticisms of how you are handling, this OP, judgement is irrelevant. This is how people are. But I want you to notice that what you are hiding from is really really obvious in the words you are using. i'm not saying you actually don't love your husband, or that you shouldn't stay, at all. But, as with many people after an affair, you have made your decision based on the lesser of the evils available to you, not a positive thing you really WANT. This is going to make it hard for you emotionally and ultimately hard for him too. It leaves you vulnerable to future indiscretions (in order to test out other alternatives) and possibly will build resentment as you are further controlled and trapped by suspicions and guilt.
You're doing well, you're doing all the right things, but with great respect, I'm not sure you know yourself completely yet. And that's sort of where some stuff is going to begin. Your affair was actually probably a way of doing this, a test of who you are and your relationship. Have you ever had counselling? Sorry if you've said. You're in your 30s, right?