Chest is feeling hot and hard to catch my breath. I haven’t remembered my dreams in a decade but woke up from a very vivid nightmare

I opened a box in a basement and this dark spirit started flying at a terrifying speed and right in my face this horrifying scream like a jump scare. 
Now it’s hard to catch my breath

I don’t get why I’m shaking. I haven’t cried in years and I’m crying. 
I didn’t think I have a future so why do I care it’s so funny.