I take 100mg of doxycycline per day, that day I CANT take ant-acids which significantly lower my hiccups, vomiting during sport and severe heartburn at random points of the day / exercise. It really affects my life, so 1- do I have GERD? I’m willing for more detail to include, 2- what else can I do? :) ( ps I take Quickies for the heartburn +gerd symtpms )