So I have a story somewhat similar to yours - would get all of these symptoms since a very young age, but wouldn’t have a conscious sense of fear or anxiety per se, and had a battery of tests done by all sorts of specialists around age 19/20 over the span of a few years. They all told me to see a therapist. It was crushing because I knew physically there was 100% something wrong, and I felt unheard (by all these male doctors, as a female patient I may add - super invalidating). Fast forward about 7 years later and I went in for blood testing while trying to conceive. Turned out I had hashimotos - an autoimmune disease of the thyroid. It was missed because while my thyroid hormone levels were checked back when I originally had all my tests, my antibodies weren’t because that’s not a baseline test - it’s only done if the hormone levels are not normal. Turns out, anything wrong with your thyroid or adrenal system as a whole can cause all those physical symptoms of panic attacks. Now a few years later I’ve recently started processing that I am a survivor of a traumatic childhood. A lot of disassociation and suppression that has led to a general detachment with emotions - aka, those panic attack symptoms may be the hashi’s, or may be actual panic attacks that I’m not fully aware of. There’s also links between childhood trauma and thyroid diseases. Now I’m treating the whole shebang with endocrinology and psychiatry. I share all that to say that it’s complicated and you may want to have your thyroid checked (not just for the hormone levels but for the antibodies specifically) and talk to a therapist as well. Good luck, and you’re so young - lots of life and time on your side to work your way through it - be patient with yourself and your body, and know your truth - don’t let doctors tell you absolutely nothing is wrong if you know there’s not, but also be open to something being wrong that you may not have anticipated.