Hello and welcome to the forum. We're sorry you are having this issue. If you are having chest pain, we do recommend that you are seen by a health care professional as soon as possible. Ruling out any serious cardiac issue is the first thing to do. However, you are very young and sound physically fit so would not think this would be the case. None the less, you need to be evaluated by a doctor.
** if you have chest pain accompanied by shortness of breath, nausea, lightheadedness or break out into a cold sweat, seek immediate medical attention.
Take a look at this article. https://www.healthline.com/health/causes-of-chest-pain#mental-healthrelated
Almost all chest pain issues caused by the heart are associated with shortness of breath. That's not to say there won't every be an exception. You do not have shortness of breath? There are also respiratory causes, digestive causes and psychological causes.
Again, it is best to see your doctor for further evaluation. Let us know what they say.