Hello and welcome to HealingWell. I am sorry you are having problems but I suspect your move has kick up your stress and along with it your anxiety. It is a major change in your life but with time I feel you will adjust. Just be gentle with yourself.
From a medical perspective, it sounds like you should see your physician if these episodes continue and I am sorry to hear the ER Doctor blew you off. While it may be panic attacks, there's also a chance that it could be something more physiological like sleep apnea. Do you feel rested when you wake up? And are you fatigued throughout the day? Just some things to think about. Even if you are experiencing a feeling of anxiety when you wake up, it still could be physiological. A feeling of anxiety naturally accompanies an inability to breathe! I have panic attacks too but have never had one in my sleep.
I have heard of many people who do experience what you are describing as waking up in panic mode and not feeling able to breathe. People have described it as waking up - feeling like you can't breath, almost forgetting how to breathe. And then it's all okay. But you're left feeling pretty frightened.
You can always come here and talk with us as we are here to support you and help in anyway we can.
Please remember I am not a Doctor so the comment re sleep apnea was just my opinion. I do not diagnosis.
I look forward to getting to know you better.