I can’t take it anymore

I don’t know what’s wrong. I feel this nagging thing in my chest. I’m shaking & crying. I feel goosebumps but it’s so warm. I can’t handle it. I just want to cry and cry and cry. I want to scream. I’m not sad or mad but my heart is causing me to want to scream.  It’s so much to handle. I’m sure there was nothing to trigger it.