Anxiety is such a pain! Sorry you have it and yes, that's what you describe. You've had a physical this year? Sounds like you have been to the doctor. They've ruled out any coronary issues (and hypertension and heart issues at your age are rare but still, your doctor needs to be in the know and clear you). But it does sound like some classic anxiety symptoms happening. https://www.medicalnewstoday.com/articles/319496 We get these feeling as our body reacts to anxiety and stress. What is key is to know your triggers or if it is just generalized, to know how to solve it. Sounds like distraction works for you. But what else can you do? If you recognize any causes to anxiety, you can work on those. Time management strategies, for example ,to help with school work so you have less worried moments of getting it all done. That kind of thing. But also, breathing exercises, self talk to help, down time for self care, a therapist to talk to. You sound to be coping pretty well but if not, medication can really help too. Getting exercise is important. It's a great stress reducer and helps us stay centered and less anxious overall. Eating well and plenty of sleep. All help.
What kinds of things stress you? School work? What else?
In all reality the chest pain is just a reminder. You wouldn't know your having a heart attack. ( 27 and just had a heart attack withdrawing from 90mg 2mg for 10 years) so your age. Anxiety is a fight or flight feeling. Mine has become flight, to the point it's not safe. I recommend just remembering anxiety is normal and a driver. It can get to be to much sometimes but unless your convulsing pretty bad I would throw the heart attack thing out the window at your age no benzo use from what I read which is great! Anxiety manefists itself in almost every form possible. I literally hallucinated to the point it's my reality. Keep distracting yourself like you said. I believe you will find it is all a trick. Aka your mind. Hope this helps