I'm two years out, and it was near a year before I ever had a PB. I still don't very often, but the band is a quirky, fickle, ever-changing thing and you simply can't predict it. So many things can affect it. Illness, fever, flyinig in airplanes, stress, your period, anger or grief, over eating, not chewing properly, eating to fast, fills. The list goes on....... Every day is different. You literally have to LEARN your personal, specific band patterns. What works for one, won't for another. Be patient. Also remember that frequent and consistant PB or vomiting is NOT NORMAL and can indeed be DANGEROUS in many ways. If it happens frequently, CALL YOUR DOCTOR. Take the process and the journey to good health slowly. Remember, you're in this for your health. Listen to your body, take notes and learn your lessons. It will all be fine and SO WORTH IT!!!!!