It's 2:47 AM. You woke up with a weird twinge in your chest. Your heart's racing now, not because of the twinge, but because you've already opened six tabs about heart attacks, stroke symptoms, and rare autoimmune diseases. You know, logically, that you're probably fine. But your brain won't let it go. Just one more search. Just one more article. Maybe this one will finally give you the reassurance you need. Except it never does. If this sounds painfully familiar, you're not