Hi I m having dizziness when standing up and shortness of breath when climbing stairs. I too burp a lot for the past 2 days. I m 5 to 6 days runner and each running distance is about 5km. I had a angioplasty and stent last year. I went and seek medical treatment and done an ecg the result is my heart is fine. I was told by the doctor that I m suffering from gas influx? I m still having the symptoms and what should I do.