You are allowing awareness of your body that you had adapted to mostly tuning out.

Some people are more sensitive skin situations than others. Make a plan to honor your body ahead of time with the right fabric.

I wouldn't normally recommend this, but what you're describing is symptoms of potential neurodivergence and we have different needs than the other kids. The more "in" the body we become, the more we recognize how uncomfortable bodies can be.

Consider allergies. Some days everything drives me bananas because my immune system is off on some misguided mission to obliterate dust, pollen, and mold.

I do better with moving meditation. My body automatically begins to sway and I just roll with it. (That's a small version of moving meditation and not intended to represent everything that moving meditation means.)