The doctor told me I had to quit smoking because nicotine, a drug, activates the acid pumps in my
stomach lining and would irritate my
ulcer.
It appears that maybe the lack of nicotine has caused some change in your stomach.
Ten years ago, I developed a second ulcer, and I have taken one OTC Prilosec a day for 10 years with no problem. Why not try an experiment and take one Prilosec or Prevacid a day for 4 days to learn whether your heartburn has stopped?