What should I do when I go to court if I was driving while suspended but unaware?

I was crossing the bridge to another state. When I stopped at the toll booth, there was an officer standing at the toll booth who noticed I didn't have a seat belt on and told me to pull over to the side. Once I gave the officer my information, she came back and told me my license was suspended and I couldn't drive so I had to have my girlfriend pick me up. I was totally unaware that my license was suspended and I paid to restore it that same day. The very next day is when a notice from the DMV arrived stating my license was suspended.