PLEASE HELP!!! I am 17 years old and overweight. im 6'1 313 pounds. Ive had blood tests done for heart disease checks and aside from a slightly elvated cholesterol level which my doctor said ws normal, he said i was perfectly healthy. this was 3 years ago however. around 10:00 this morning i began having a bad case of acid reflux which is normal for me when i drink coffee. however this lasted a long time and was accompanied by breathing pain in the center of my torso when deep breaths were taken. also when i yawn it felt as though not enough breath was being drawn in. it is now almost 11 the same night. i still have the symptoms though they are lessened. my acid usually bothers me through the night and having onions with my dinner isnt going to help it. im worried about the breathing pain and incomplete yawning though. could i be having a heart attack?