Adjustment of Status - I-485

Good evening everyone, please i need explain what is likely to happen. I furnished an interview with my husband on June 4, everything was going on smooth until IO asked my hubby date of his divorce with his ex. The divorce date was showing 2007 and the date on his citizenship is 2012 but married. There IO asked my hubby why divorce on 2007 and still married 2012. But my husband was able to defend it that, he was not aware of the divorce,that the woman went back to there hometown to divorce her. So the date on the divorce cannot be changed by him. After IO didn’t give us any paper to sign for further review, rather he said they are going to do background checks on the divorce which is going to take a very long processing. Status hasn’t changed since. I am so depressed and I don’t know what what to do. My husband was just telling me to calm down that everything is going to be fine. Pls am sorry for my long epistle. Anyone with the similar experience pls let me know th outcome and what to prepare for. Thanks