Thanks for your question on Healthcare Magic.
I can understand your concern.
No, this is not correct diagnosis.
Heparin is given mostly in cardiac
chest pain (coronary artery disease - CAD).
With normal ecg, possibility of CAD is less likely.
Gastritis can also cause similar kind of pain.
So in my opinion, she should definitely get done 2d echo,
stress test (trade mill test).
If these are also normal, no need to worry for CAD.
Give her simple
antacid (
pantoprazole) twice daily on empty stomach.
Ask her to avoid oily and spicy food.
Hope I have solved your query. I will be happy to help you further. Wishing good health to your mother. Thanks.