You should run a credit report. It's not going to hurt your credit standing. What hurts your rating is if you either don't pay your bills or you don't pay them on time. The more credit cards/debt you have, the more it brings down your credit rating. It's best not to have too many credit cards, whether you use them or not. After my divorce, I contacted each and every credit card company that I had cards with and notified them to discontinue my accounts. I kept one card and that's all I have. I run a report once a year to ensure that my xh hasn't put my name on something that he's using or his current wifey is using.
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.