Late payments, obviously, will hurt your credit score. Regardless, you might want to check your credit reports, which you can get free, at the site below.
https://www.annualcreditreport.com/index.action
You also might want to sign up for Turbo to get your credit score --> https://turbo.intuit.com/
In any event, a decrease of 10 points should not present a major issue.
