My hearts been hurting lately, sometimes I d get sharp pains through it and it was one where I d have to stop what I m doing and deep breaths only make it worse, whenever I run it feels like it s being strangled. I was walking slightly faster than I usually do and it felt like someone was squeezing it and I don t even know what s happening I ve eaten healthy I don t eat before I have gym but if I do it s only a few bite or pieces of something. I m 16 years old and I feel like my hearts going to explode or just give up and jump out of my chest help me man I need an adult.
The sharp pain which increases on inspiration is more pleurisy pain, (lung s) than heart, though the squeezing pain you described may be due to heart.  Considered your age I would still not worry it to be heart.  Though a 2D echocardiography to rule some congenital heart disease e.g. HOC, may HELP.  Again I would reassurance not to be tensed about it.  Undergo proper training at gym with your instructor, don't overdo.  Regards Chat Doctor.  For further clarification, do mail at XXXX