Adjustment of Status - I-485

Went to an interview in San Fernando Valley, CA. My husband is a citizen, and I applied for a green card through marriage last year. Right at the beginning when they just called our number, they called just me (separate interview) I was under investigation for an hour and 20 minutes. Then my husband was called without me for another 30 minutes. I gave the officer more than enough documents, and even though we had some minor mistakes for questions,, they asked us it seems like the interview went well. No answers were given on the spot, and it's been 3 days now and no answers online.
Many people told me it might have happened because my husband got his citizenship by marrying a US citizen. I don't know why they separate us just like that and many people I know received answers within a day. I am worried something happened...
The only thing I can see online is: "Your interview for your Form I-485, Application to Register Permanent Residence or Adjust Status, Receipt Number MSC **** **, was completed, and your case must be reviewed...."