I am having heartburn in my upper abdomen,belching,i can even hear wind inside my abdomen,if I am eating I felt pain when food passes down my stomach,the pain is down my chest or esophagus.A month ago I woke up when I felt a very bad taste in my throat,the taste was like acid,so what I did was to gurgle with water and drank 2 glasses of water to relieve the soreness.What I am having now?Gasritis,ulcer or other abdominal disorders?I am very worried because abdominal cancer is very common now.Pls. enlighten on this.Thank you.