I do understand. One way to help through those tough times may be to focus on the positive. Face the sorrowful part (uncertainty of the trust) and acknowledge it's existence. Then put it in your pocket and wear your victory around your neck (your second chance). Because what you have overcome truly is a huge victory!!!
People are always telling me not to worry about it until there is something to worry about. Does that work for you? Honestly, as true as I realize it is, it doesn't always work for me... But SOMETIMES it does. And usually those are the times when I have a supporting friend to remind me to keep my chin up.
Communication... Have you talked with your spouse about this fear you have? Perhaps if you put it out in the open, you two can take steps together towards the healing, which may fill you with more confidence if you have some say in it's progression.
I wish you the very best.