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The folks above are right that you need to see a doctor - chest tightness covers everything from heart issues to muscle strain to anxiety, and only a professional can sort it out. One thing worth trying before your appointment: check if you're unconsciously holding tension in your shoulders and upper back, since that's super common and people often don't realize it's contributing to the tightness until they deliberately relax that area.
Don't try to diagnose this yourself or just assume it's anxiety - you need to get to a doctor ASAP because chest tightness can be serious and there are way too many possible causes for you to figure out alone! It could be anything from muscle strain or acid reflux to something cardiac, and only a medical professional can actually examine you and run the right tests. Seriously, this isn't something to mess around with, so make that appointment now if you haven't already!
How long has this been going on and have you noticed it getting worse, better, or staying the same? Look, I get that people jump to anxiety, but here's something worth considering: even if stress is playing a role, persistent chest tightness deserves a real medical workup because your doctor needs to rule out cardiac stuff, muscle strain, acid reflux, or a bunch of other things that actually need treatment. The fact that it's persistent is what matters here. Go get checked out - not as a maybe-someday thing, but soon.
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