That weird sensation or symptom you are dwelling on, is just anxiety. 

Anxiety is supposed to be powerful and when it becomes a disorder, its job is to bug you and to purposely give you unwanted symptoms because your brain thinks there is a problem to be aware of, when in reality everything is okay. 

You are already safe, anxiety attacks/panic attacks shouldn’t actually be called attacks because it isn’t an attack at all. It is your body’s natural defence system trying to protect you, every single fibre and organism in your body is putting up extreme defences from a danger that isn’t there. You are as safe as you could be. Just let your brain and body do its thing until it learns that there is no danger present, suppressing your anxiety will only teach you to become even more afraid of the anxiety, which will in turn make it worse as you learn to become even more afraid of it. 

Anxiety is supposed to be intense. If anxiety wasn’t terrifying, no one would have the disorder. There is a reason why people think they are losing control or that they will die during anxiety attacks, it’s because we are evolutionary trained to survive actual dangerous situations. But since there are no dangerous situation present, of course you get hooked on the physical symptoms, and that’s completely normal to do. Just remember that if something actually was seriously wrong with your body, you would definitely know. Anxiety has its way to make everything seem like a death trap. Don’t worry, your body is just being overprotective of you. You are safe.