Someone please tell me what’s wrong with me.

I’m not feeling well.
Not in ways I can easily explain.

It feels like something is crushing me,
My head feels tight and my chest feels heavy.
It feels like I’m inside a narrow room⏤
Leaving me restless out of my wits.

It came out of nowhere,
One moment I was happy⏤
Jamming songs and bartering jokes with my family,
The next thing I knew, everything came crashing down.

The more I think about it, the lesser I understand
I don’t know what to do.
I want to lash out, to scream, and to throw things.
But for what exactly?

I… I don’t know. I don't understand.

I could only cry with a silent scream.
Desperately pulling my hair with all my strength,
as if that’ll help me pull myself together

Just what exactly is wrong with me?