I never have breakfast, for lunch I have Greek yogurt, water, saltines, & light tuna. But for dinner I have a bigger portion than lunch by a lot. It really varies but I almost always have at least one vegetable and one fruit on my plate. I eat salads with my meals whenever I can.
Can you give us an idea of a day's food intake? It could be that your healthy choices aren't quite so healthy, or that you're eating too large portions.
With all that exercise, you should be able to lose weight, but then you probably also have a lot of muscle, which could tend to keep you from losing pounds.
A good thing to do is to track your measurements to see if they show changes in your body composition.