My best buddy is a judge, and was once a hot shot defense lawyer. I talked with him on this. Mistake #1 - Not checking in. Mistake #2 - Volunteering information at all. You had not been charged must less arrested. Mistake #2 (The Monster Error) - "The Man" needed an executed search warrant in order to enter the premises. But not after being given consent !!! At that point he could look for anything about anything.
And I refer you to a popular Star Wars movie: "Now you be in deep do-do."