i'm sixteen years old and female. in the past few months i started having trouble with breathing and started feeling like there was a lump in my throat, and like there was a pressure on the center of my chest. all of these are symptoms to heart problems but i assume that's not the case because of my age and healthy diet.
A few weeks ago i experienced an episode where i felt light-headed and almost went unconcious, however it was a very painful experience and i couldn't see, it felt like all the blood went straight to my head and afterwards i had a nagging headache for the next few days. I tried eating more and drinking more water and that doesn't help. With excersise it seems to get worse. I suspect maybe all of this has to do with stress, however when these symptoms happen it usually does not correlate with any kind of mental fluctuation. There is also a muscular pain on the left upper side of my chest. I basically just want you to tell me that nothing's wrong with me.