Very light yellow stool for a week with no pain shold i call my gastrointologist?

Is this new or not?: The amount, color, frequency of stool varies with foods, speed of emptying of the GI tract, medications ; supplements ingested, gut flora (unique for each individual), additives (like blood), subtractions (like absent bile), infection, inflammation, ; other factors. If stool pattern has changed, is unusual for you, ; the change persists, or is accompanied by other symptoms, see your doctor.

Gastroenterologist: Yellow stool can be related to gerd, celiac sprue, steatorrhea, hepatitis, cirrhosis ; gallbladder diseases. See that you have a history of gerd, heartburn ; abdominal bloating ; that you've had a # of gastro studies. What has your gastroenterologist instructed? Usually reporting a significant change in bowel habitus is warranted.