When I was about 10 years old I blacked out a couple of times after exercise, so I went to a cardiologist who ran some tests and told me that I had an irregular heartbeat that would go away as I got older. He said my blood pressure was low, prescribed me some salt pills, and I never really had any problems since then.
I am now 20 years old, in college, and keeping a healthy schedule compared to most college students. I eat three times a day, sleep 8 hours a night, though I don't really exercise except walking across campus to class. A couple of weeks ago I started feeling pressure in my chest. It wasn't anything painful, just uncomfortable, and I assumed that I was developing some congestion due to a cold. 2 weeks later, I still have the pressure in my chest, but I never developed a cough or fever or anything else that I would associate with a common sickness. It seems to get worse when I do have to walk up stairs or exert myself, but it never goes away even when I have been resting for several hours. This morning I was almost late to a class so I was out of breath when I got there. Everything was normal but about 40 minutes into the class I started to feel really weak and dizzy and I broke out in a sweat, I almost thought I might pass out. But when class was over I stood up and everything felt fine, though the pressure and weakness is still there. Should I make an appointment to see my doctor or wait to see if any more symptoms come up?