Oh sweetie.
Of COURSE we support you! And you're absolutely right - with your level of exercise, you DO need to start eating more, which is exactly what your body's been telling you with the binging urges. You may even find that you lose quicker at the higher caloric level than you were at 1200.
As far as today goes - it seems like it'll be kind of hard to get through the rest of the day with just 200 more calories. Could you maybe switch today & tomorrow around, so that today, when you are so hungry, you can have the 2000 calories, & then tomorrow you can be extra careful to choose particularly filling foods so that you can stick with the 1500? I mean, part of the benefit of calorie shifting is being able to eat more on days you're hungrier, & less on days you're not - it shouldn't be about, "Today is Friday, so I only get 1500 even though I'm famished, and tomorrow is Saturday, so I'll put away 2000 even if I feel full."