help: Persistent Sensation of Heaviness from Clothing on Chest! – ruining my life!

I'm a 19-year-old who’s been dealing with a frustrating issue since I was around 8 years old, and it's really starting to wear on me, especially because I'm big on health and self-improvement. The issue is that I constantly feel a sensation of heaviness from my shirt on my chest, and sometimes on my neck and stomach, but it’s mainly focused on my chest. Heavier clothing, like jackets or coats, trigger this sensation even more intensely—I can’t wear them at all because I constantly feel the weight, and even details like zippers destroy my focus and make me extremely uncomfortable.

This sensation is particularly bothersome with t-shirts, too, but not as intensely as with heavier clothing. The more I focus on this feeling, the worse it gets, to the point where it causes significant discomfort and, in rare cases, mild pain.

I’ve found that pulling my shirt off my chest, crossing my arms, or even placing my hand near my chest can provide some relief, with the sensation almost disappearing. However, this is only temporary, and the issue remains persistent.

This issue has been with me since childhood. For example, I could never comfortably wear a seatbelt because it bothered my chest. Even at the barber, the cuff they put around my neck makes me really uncomfortable. Taking off my shirt provides immediate relief.

I’ve had MRIs of my brain and spine, both of which came back unremarkable, ruling out multiple sclerosis. My aunt has MS, which is why I went for the MRIs in the first place—I’ve had two, one recently and one a few years ago during a period of anxiety, because I wanted to be sure. Despite the clear MRIs, I sometimes still worry that I might have MS.

My skin appears normal, with no visible changes or abnormalities. Occasionally, I experience a similar discomfort at the top right of my forehead, which somewhat resembles an icepick headache. This sensation worsens when I think about it or if my head is in a certain position, but it tends to go away if I turn or rub the area.

I’ve also had a history of anxiety that began during my freshman year of high school, which was managed with cognitive behavioral therapy. The discomfort in my chest became more noticeable after my anxiety onset, though I recall being a sensitive kid even before that. The only incident I can remember involving my chest was when I was a little kid and I slammed into my bike’s handlebars, momentarily knocking the wind out of me. However, I’ve had x-rays done and they showed no damage.

What really crushes me is that despite my focus on health and self-improvement, I still have this big worry hanging over me. I'm extremely health-conscious—I exercise regularly, have tried various diets like carnivore and keto, avoid all processed foods, and keep up with the latest health science. Despite all this, I still struggle with this ongoing issue, which makes it even more frustrating. I’m hoping someone might have insight into what could be causing this heightened sensitivity or discomfort, especially given how long it’s been affecting me.