I'm sure this is a very scary experience for you!

I'm not a doctor, but in my years, I've seen stress produce many of the symptoms you describe, in me and in others. Are you under extreme stress for any reason, or putting yourself under major pressure?

Have you tried some relaxation techniques, including breathing exercises? The terror I experienced after having a stroke has given me many anxious days. Here's one technique I use.
Try repeating to yourself:
I am safe.
I am at peace.
I am healthy.
I am calm.

Give it some time. See if it helps. If not, better see a doctor.

It might be helpful to watch some of my YouTube episodes (about 5 minutes each):
https://www.youtube.com/@srlucado/videos