I think frenchhen has a good point (she often does
I could also add that your body may be sending you a signal that it's time to slow down. It is harder to lose when you are at a "normal" weight to begin with, and it looks from your stats that your BMI is about 20 (converting, you are about 5'7" and 130 lbs). So no matter what diet you use, it will be harder to drop additional pounds.
I know it sounds paradoxical, but try adding a couple hundred calories and you may be surprised at how it improves your overall calorie burn. A couple years ago, I got to my goal weight using 1200-1300 calories, but when I started maintaining, I went up to 1400-1500 and I continued to lose weight...like 10 more pounds. Although I will clarify that I use a balanced pie chart, not low carb.
Bottom line? If it works for you, do it. if it doesn't, don't. We are all different and half the battle is finding out what works for you personally.