Domestic Violence 3 Cases Will be eligible for green card

[Worry2]

Past 8-27-18 We had an interview to adjust immigration status for married to a citizen, my husband had 2 cases of Domestic Violence in the past with a total of 6 arrests, between 2002 and 2014, with three different women, after that I met him, he is a very quiet man, no violent, we went to interview and the Immigration officer told us that we need to wait because his case needs to be "review" then they will let us to know, we are really worry, all his cases were dismissed and closed, please advise.