You can always lose weight by lowering your calories and/or increasing your activity - you just have to ask yourself if you want to, or if you're OK where you are.
most people end up in the "overweight" or "class 1 obese" category ("class 1 obese" being - not very obese), so having your weight loss stop at a 27 BMI (where yours is now, according to your profile - and that is in the "overweight" category) is pretty common. If your body is happy where it is, it'll likely be a challenge to get it to go lower (and to keep it lower), but again, you can do that by lowering your calorie intake or bumping up your activity level.