Absolutely. I think it's important to be cognizant of some of those mistakes we have made as a reminder of why our sobriety is so important, but it's also important to not fixate or obsess about them because there is absolutely nothing you can do to change them.
Also keep in mind that you are very, very early in sobriety - most likely still in the acute withdrawal phase, so things are going to feel a bit rocky for a while. It's perfectly normal for you mind to be a bit on edge for a while.