Should I eat if I'm hungry, but already over my limit?

I'm maintaining on anywhere between 2,200 - 2,500 calories a day. I'm 5 feet and a half and am currently around 115 lbs. Sometimes, on days where I'm really tired or a lot has happened at school, I'll feel more hungry than normal. Usually it's near the evening when I'm doing my homework and finished with dinner. Should I eat something even if I'm over my calories or just wait 'til the next day? I'm not terribly hungry or starving, but I do feel a bit of hunger. I know it's not cravings because I hardly crave anything anymore because I treat myself from time to time, haha. :P So what do you guys think? Thanks for any input or advice! :D

Don't underestimate the calorie-burning power of a long and stressful day at school! If your body's telling you to eat, it's probably because it needs the fuel. My stats are almost exactly the same as yours, and the last time I counted I was maintaining on 2200-2500 cals/day, but I'd often get up to 3000 on days when I was especially active, busy or hungry. I stopped calorie counting a few months ago and now just eat whenever I feel like it, and I've maintained just fine. I never, ever go to bed hungry - if I feel a bit peckish before bed I'll always eat something. I usually have yogurt, fruit, applesauce, hot cocoa or oatmeal, or a homemade cookie if I have any (I always make my cookies healthy - not empty calories). Even if I feel I've eaten more than I've burned for the day, I don't sweat it - it's just a couple hundred calories, nowhere near enough to cause me to gain. It all balances out eventually.

Also, if you're feeling tired, maybe you're not getting enough sleep. I know that when I get less than 6 hours of sleep, my body wants me to compensate it in food - I'm ravenous all day no matter what I eat, and I crave fatty, sugary, high-energy foods. Make sure you get enough sleep, too!