Why Does One Have Green Stools For Three Weeks?

Why am I having green stools for three weeks?? (Medical background) I ve been suffering with IBS-like symptoms my whole life, but have never gone to a gastroenterologist (for finacial reasons) and I was also recently diagnosed with NAFLD and I have been taking macrobid for 6 months. I have also recently noticed that I am getting chills. I also have noticed the new appearance of 2 tiny red dots (moles?) on my left breast. (Although my father has many red moles, so it may be nothing). I m a 20 year old female. 5 feet tall, around 98 lbs. I eat a relatively normal/healthy diet. I don t eat a lot of fast food or anything. I ve actually been eating a gluten free diet for months hoping for relief. I do know I have severe allergies and several food allergies as well, including peanuts, soy, shellfish, and who knows what else. I was referred by my GP to go to both a Gastrointerologist and and allergist, but I was hoping maybe you could give me some insight on what may be wrong in the mean time.