Can someone come into the hearing with me?

As long as you are ok going in alone, that is typically best. The issue is that somebody else is not allowed to testify if they come in with you, so you could not look to them for answers. They would have to be like a fly on the wall. Since it is natural to try to get answers from that person if you don’t know an answer, it would be best to do so on your own. If you have to have somebody come in for moral support, you should let your attorney know, however it will ultimately be up to the Judge to allow that person to come in or not.