Hi doctor. I am a 18 year old male with gastrointestinal problems. I had all my symptoms come on REALLY suddenly on May 12 and most of them have not left. I had nausea (but no vomiting), loss of appetite (I would gag when I was eating), and a rumbling and gurgling in my stomach like something is in my stomach. This felt like the stomach flu almost but I didn't have any diarrhea. Sitting up seemed to help. The only symptom I still have now is is the gurgling and weird feelings in my stomach in my mid abdomen most of the time, some days a tender stomach, and some days pain under my bottom left rib. My bowel movement are normal, I might be a bit constipated though. I went to my GP a month ago and he gave me omeprazole 20 mg which helped for a while but doesn't help as much as it used to. I am most concerned about this gurgling feeling. It might be gas but I can't pass it. I am worried that I have something serious. Thank you for your help.