Very loose stool that's light brown and has white fuzzy stuff on it, may have some orange spots. Persistent for almost a week. Should I see a doctor?

See answer. Symptoms suggest a viral gastroenteritis. Should resolve over the next 4-5 days. If not see a physician. Imodium (loperamide) AD OTC can help if having loose stools multiple times a day. White color and orange spots likely insignificant. See: for more information.