The move in itself could trigger off Post Traumatic Stress/Depression. Moving interstate away from your family and friends is a very stressful thing to do. I know, because I did that myself 5 months ago. If I didn't already have some good supportive friends here in my new town it would have been extremely hard for me to cope.
If you think that you should give therapy a go, then why not? With all that you've been through, you no doubt have many issues to have to be dealing with. Even if you think you have dealt with the past, something is obviously bothering you. It may turn out that it's due to your move, or it could be something much larger. Only you and your therapist will know.
((((((SP)))))) Hang in there. Please seek help if you think you need it. I want you to get better, ok?