13 year old having heart attack?

[唐容 - ä½ å¥½]

I'm a 13 year old girl and I'm paranoid about having a heart attack. I've been experiencing some sharp chest pain and I have mild asthma, and recently I got shortness of breath for no reason. My mom said it doesn't matter and says she doesn't want to waste her time checking with a doctor.

My grandma (Mom's side) passed away recently due to a brain tumor and my dad's side of family has a history of diabetes.

I'm kind of a couch potato, going on tumblr and other social media often, but I do fence 3 times a week for about 3 hours a time. Additionally I eat some junk but I do eat healthy most of the time.

(I'm Chinese, by the way.)