Hi, iam suffering from Belchings and Nausea since 2 months after using pain killers for my backache, i visited Gastroentorologist and gone through Endoscopy and the results are good, no issues found there, but doctor prescribed Neksium 40mg and Ganaton 50mg for 2 months, i was using them since 20days now, i still have belchings and sometimes Nausea, so can you please explain my problem and how long it takes to completly cure