Hi, I'm a 15 year old girl and have been having abdominal pains since December, almost 8 months now. I get pains after eating big meals or foods such as pizza, lots of cheese, red sauce, or acidic fruits. I have had many tests done and taken way too many antibiotics than I should at my age! I am a competetive soccer player and I also get stabbing cramp-like pains if I go for long runs. (I am also the goalie of the team so I have to dive around a lot, but I still play field at times). These pains can be in specific spots like bottom left, upper right abdominal section. I can't pinpoint a spot where the pain only occurs. The doctor is thinking I have IBS but not all the symptoms match. I do have lots of green stool and go frequently but these events happen at random. I never know when my stomach pain will come. In the upper endoscopy, they found a lot of acid in my stomach and said I had gastritis. I seem the most pain after certain meals, or when i over exert myself in practice. I've had x-rays, ultrasounds of abdominal and pelvic areas, gallbladder function test, nuclear scan, upper endoscopy, colonoscopy, blood tests, lactose breath test, checked for H.Pylori and I can't think of others at the moment. If anyone might have any advice or suggestions regarding my situation i'd be very greatful for your comments (: Thank you.