((blue)) I don't know what is causing your racing heart, but I hope that you can find out soon and address the problem. Try to eat, please. I know that it must be very difficult to keep food down when you are feeling so anxious/manicky, but it will really help you to take care of yourself physically. Also, eating can help you keep to a schedule if you have meals at regular times. And keeping to a schedule is always good (though rarely is it easy! )