After you file

My agent was nice, but not very helpful. He said it was random and no need for alarm. That it could take up to 45 days but maybe not that long. He didn't say anything about any triggers. He said it was random people with deeper reviews. He also saidd it didn't mean anything was wrong. He said if you dont receive a letter it is just a waiting game!! I HAVE NEVER HAD THIS HAPPEN BEFORE