I just started counting calories a couple days ago, and I'm a little confused...
Is it bad to have a meal consisting entirely of vegetables? As long as I get wheat, dairy, fruit, and meat sometime else during the day? Because today in the cafeteria at lunch I just wanted to fill up on the delicious stir-fry veggies they had (I know you have to be careful with stir-fry, but these weren't very oily at all), but it felt weird for vegetables to be the only part of my meal so I also grabbed a hamburger. I still managed to finish off the day under 1400 calories, but would I have been fine with just the vegetables?

I personally would add some protein to it - eggs or some nuts maybe?
A huge meal of stirfried veggies = some carbs, some fat. Remember that you're low on protein and get it after school, no worries there.