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Please help!!? - what does a swollen jaw and swollen ankles mean

om 14 and I think very sceard, because I always heartburn and pain in the jaw back and I shaorness breath and swollen ankles and even a little, I always think IM IM will have a heart attack, but not obese, in which the GI had a family and I am not diabetic Wen ECG for 2 months and everythin was fine, my father and my doctor, you think only having panic attacks. Ideas?