not to doubt you, but are you weighing and measuring our food? tracking every bite? At your weight, i highly doubt you are only eating 1000-1200 cals a day if you are only losing 1-2 pounds a week. In water weight ALONE you should have dropped 8-12 pounds (at your starting weight) considering you just started doing this (so no, your body has not kicked into "starvation" mode this early on) I think you are still losing, so thats great!~ i think you are also eating alot more than you think. Thats ok, 99% of us drastically underestimate our caloric intake, and as long as you are losing, its fine.
Im sorry, i ASSUMEyou recently just started, due to your september join date, but that might not be true at all.....??
Either way, WEIGH AND MEASURE everything!