Hello and Welcome to ‘Ask A Doctor’ service.
I have read your question closely, I understand your concern and will be helping you with your health related problem. Heart burn is usually due to acidity of stomach and can easily be controlled with life style modifications. Plus
numbness of arm if just happened for once is not an alarm symptom there is nothing to really worry about that.
Life style changes should be:
1) Avoid coffee, caffeine, junk food,
binge eating,
smoking , alcohol (what ever is relevant).
2) Eat small multiple meals a day.
3) Reduce weight if you need to.
4) Stay physically active do regular walk.
5) Take simple food with balance of meat and vegetables.
6) You can take Syrup
Gaviscon for symptoms relief.
I hope this answered your question. If you have more queries I am happy to answer you.
Regards,
Dr. Muhammad Ahmad