What i can suggest is that you write down is
1) what have you been doing/eating/ emotionally feeling before the pain
2) give a descriptiopn of your symptoms, grade the pain
from 1-10, note down any breathlessness, nausea, sweating, pale skin/lips, dizziness, note down where the pain
raidiates to - is itjust your left arm
, or is it your back or your jaw etc..