Hi Drew,
yes Caffeine and quitting do interact. image
Please go and see your doctor about your "heartburn" feeling. image
While we must not give medical advice online (Giving and getting medical advice online), I am sure that this is a symptom that must worry you. Just for peace of mind: Go and have it checked out! (Now the doc can't nag you about quitting smoking any more! image)
PinkFlowers
No more nagging since 2 March 2005