M.H.
I dont know if this is a response, so much as questioning. When you say exercise, what do mean? Cardio, resistance training? Both? That has something to do with it. Also, when you speak of calories, what are your carb/protein/fat ratios? That, also, has something to do with it. Lastly, what is your body size? You may need to focus more on pant/dress size and/or body fat percentage and focus less on the number on the scale.
I am not, by any means, a professional. I am a member of a gym, workout regularly and have a personal trainer. I have hit PLENTY of plateaus!!! I worked out in the month of November and GAINED two pounds!!!! BUT, I lost 2% body fat. Perhaps you can ask yourself these few questions to help identify your problem.
Good Luck and Happy Shrinking!!!
Margaret :)