Hello. Thank you for your question and welcome to HCM. I understand your concern.
Every pain in the chest mandates further evaluation. According to your age, there is almost a zero possibility that his pain comes from the heart. However, if you continue to feel this way, just to be safe, do an EKG. There are a lot of other origins of the
chest pain. Your description is a pain that lasts 5-10 minutes and is localized. Localized pain goes more for a lung origin, or musculoskeletal origin. I am assuming that, as a young fellow, you exercise. If you also smoke, and this pain, when it is present, relates to the inspiratory-expiratory cycle, then a load on your lungs and overall in your
rib cage can cause this. Even this has a slight possibility to happen. The main suspicion is on the musculoskeletal origin of pain. It can happen from assuming a bad position while sleeping or a little trauma to a certain part of the rib cage. So, this may probably be produced by a trauma to a rib, a rib-joint or from intercostal (between-ribs) muscles which become sore every time there a physical activity that includes heave respirations is carried out.
I hope I was helpful. Take care.
Dr. Meriton