Being sick and going to the ER is no fun. I hope you are doing better. Like others have said, seeing a doctor about it could be helpful to find a cause.

Like BirdDancer, when I am manic/hypomanic, I do reckless things that can cause me physical injury. Like BethRags, when I crash after being manic/hypomanic, I am exhausted to the point that I can feel depressed that can trigger my anxiety.

Like others, stress and anxiety leads to me feeling physically unwell with stomach and intestinal distress, chest pain, and dizziness.

I have had food poisoning that resulted in feeling more unwell than just throwing up and nausea.

Best wishes!