I have been stuck at the same weight, plus or minus 2 pounds a week, since June, 2012. Eating right isn't cutting it. I get more exercise now than I ever have in my life and it doesn't seem to make any difference.
Are you tracking your food? You may be eating more than you realize. Or, you may be not eating enough or overexercising which causes your body to go into starvation mode and hold onto your fat. Or, it could be a thyroid problem so you should have your doctor do some tests. I wish you the best!