It feels like I've ran 8 miles when I've only gone up the stairs. I'm guessing it's because blood isn't getting to my heart as fast as it's going out. My question is, is there anything I should be imminently worried about in the next few days before I can see a doctor?
Its strange at your age to be experiencing symptoms like this. There are only a few heart conditions for people your age, so my suggestion is to see your doctor for a full cardiology work up. An EKG would be helpful as well as a stress test. A few simple tests your family doctor can order for you. Get back to me and let me know how it goes.