I think life events can trigger a true bipolar episode. Sometimes my episodes have no triggers but sometimes they do. I categorize them as an episode when nothing I do gets me out of them. Like last year I was in a terrifying car accident. No one was hurt by my car was totaled and we could have all easily been killed due to someone's stupidity. It triggered a terrible depressed episode. I mean anyone would be depressed after that but for me I became suicidal and fought constant urges to self harm. That's what made it a bipolar depressed episode for me. But in April I had a depressed episode for no discernible reason. So for me it can go either way.

You are under a lot of stress and it could be triggering a bipolar depressed episode. That doesn't mean you need a med adjustment right away - maybe coping skills could help you through these life changes. But if it turns into a true episode like my car accident one did, a med change might be in order. But I guess you need to find a new treatment team in your new city, right? Don't put that off. You don't want to wait until you're in an emergency situation because it could take awhile to get in with anyone. At least find a therapist so you have someone to talk to about all the upheaval in your life.