Okay, one thing that I can suggest if you can't go anywhere, have called everyone you know, and no one's answering. Lie down on the floor (like a starfish, only so that you're comfortable). Close your eyes. Put your hands over your belly. Breathe in deeply (counting to however many is comfortable), breathe out deeply (counting to however many is comfortable, ensuring that your exhales are slightly longer than your inhales). Repeat, counting to the same number each time in the inhales and exhales.
Focus on the breathing and nothing else. Feel how it feels as it enters your whole body (so to speak) and then exits it.
Continue until your hands (still on your belly) are moving up and down with your breath. This will get your breathing regulated, which will bring your heart rate down and usually helps to calm down your mind. (However, if it's really racing, it may take awhile.)
When your hands are going up and down, you're breathing deeply and from your diaphragm and not shallowly from your chest, which we tend to do when we're stressed/anxious/uneasy. The next time your anxiety/energy/unease spikes, take note of where you are breathing from. If you're breathing from your chest, repeat this exercise.
This, at the very least, should help you be able to gain a little ground on the "everything is going to be okay" front.