I don t think Candida is the issue here. Its true excess taking of antibiotics could destroy your gut bacteria and cause a disequilibrium in presence of certain commensals importny for our system. This situation is a bit different. Gastroduiodenal reflux most of the time i simply due to a defective eosophago-gastric sphincter dysfunction
, causing acidic food rush in into eosophagus from stomach and causing burning. The best thing to do now is to take your drugs, usually proton pump
inihibitors or anti H2 histamnine receptor antagonists, elavate bed when sleeping, avoid late meals , avoid caffeine containing foods (Coffee, cola) an dfollow other recommendations from your physician. Meeting a gatsroenterologist in case symptoms persist could be a good option.