We all have them, most of us wind up hiding during them. I know I have many many times. But the bad days that seem to end the fastest are the ones I do something instead of hiding. I thought it would be a great idea to share those things with each other so we all have more ideas for "those" days.
One thing I do that almost always helps is take a "as hot as you can" shower :) That isn't just the water temp but also means, at least to me, a long as you need shower :) The hot water eases my pains in my heart as well as body. I stay in until the pain is hopefully gone but usually just till it is managable.