Eating and heart problems

I am bulimic and have been for about 8 years now. Im 20 years old, am 5'9" about 110 lbs. I purge about 20 times a day. I haven't had a period in about 1.5 years and am cold all the time. needless to say, logically I know I have a bit of a problem...but I have recently started feeling a tightness in my chest if I have to stand for long periods of time or am walking around alot. My arms start to tingle and I get light headed. This has been going on for about 2 months. Even more recently I have started experiencing a feeling like my heart is fluttering in my chest, accompanied by difficulty getting a deep enough breath and then followed by a feeling like my heart is racing. Im concerned that because of my eating disorder I could potentially be near to having a heart attack. Is this something I should be worried about? Or am i just overreacting?

[Roger Gould, M.D.]

this is certainly something you should be worried about and you should see a doctor.  You are disturbing your whole metabolic balance and you could be creating great damage in your body so you need to get on top of this right away.