As others have said, congrats, and stick with it. You didn't say when you started the weight loss plan. If it's been quite a while, you may need to adjust something in the plan. Maybe replace a carb with a veggie or just cut one non-essential item for a while. See if trimming the food helps to jump start your lose again. I agree about your BMI needing to be at optimal level to maintain your weight. Once you BMI is right, it's easier to keep it off, and one or two bad days won't mess with your progress so much.
After my husband and I stayed on our preferred plan for a very strict 6 weeks, we found we could then eat extras and still lose weight. Hubby actually lost too much and had to add back a cookie, or two!
Good luck to you!!