End of the day : under 1200 calories but not hungry....

As others have said, being below occasionally (say once/month) probably won't hurt you. However...
not being hungry can be a symptom that you've already lowered your metabolism and squashed your body's ability to signal hunger.
Healthy people feel hungry occasionally.
On the other hand, if you're eating lots of bulky, foods that are not calorie dense, as others have mentioned, you're probably missing some key nutrients. Your body needs a certain amount of fat to process some vitamins and to maintain healthy processes. Some "healthy" calorie dense foods are avocados, nuts, olives (and oils from these foods). You can find many other lists here on MFP.
Another "danger" from eating a diet that doesn't have these foods is that it can trigger cravings and/or binges for many people.
Even small, sedendary people usually need more than 1,200 calories per day to maintain healthy body functions, but again, the occasional low day won't hurt.

If you look around on this site, you'll find hundreds (no exageration) of posts like yours from people who aren't hungry on 1,200 calories, and hundreds more about "why can't I lose on 1,200 calories or lower?" Too low a calorie intake especially combined with too much exercise, and you can actually slow down your weight loss, never mind risking your health. See http://www.myfitnesspal.com/topics/show/3047-700-calories-a-day-and-not-losing

For more suggestions, also see http://www.myfitnesspal.com/blog/Robin_Bin/view/how-to-use-myfitnesspal-427993

Good luck!

As others have said, being below occasionally (say once/month) probably won't hurt you. However...
not being hungry can be a symptom that you've already lowered your metabolism and squashed your body's ability to signal hunger.
Healthy people feel hungry occasionally.
On the other hand, if you're eating lots of bulky, foods that are not calorie dense, as others have mentioned, you're probably missing some key nutrients. Your body needs a certain amount of fat to process some vitamins and to maintain healthy processes. Some "healthy" calorie dense foods are avocados, nuts, olives (and oils from these foods). You can find many other lists here on MFP.
Another "danger" from eating a diet that doesn't have these foods is that it can trigger cravings and/or binges for many people.
Even small, sedendary people usually need more than 1,200 calories per day to maintain healthy body functions, but again, the occasional low day won't hurt.

If you look around on this site, you'll find hundreds (no exageration) of posts like yours from people who aren't hungry on 1,200 calories, and hundreds more about "why can't I lose on 1,200 calories or lower?" Too low a calorie intake especially combined with too much exercise, and you can actually slow down your weight loss, never mind risking your health. See http://www.myfitnesspal.com/topics/show/3047-700-calories-a-day-and-not-losing

For more suggestions, also see http://www.myfitnesspal.com/blog/Robin_Bin/view/how-to-use-myfitnesspal-427993

Good luck!

Yeah, I nkow what you said in the beginning, but my problem is that it happens quite a lot.
Regarding fat, I had avocados, oils and nuts today, and they are a guilty pleasure of mine so no problem there.
I had veggies, meat, carbs, sugary foods, dairy, healthy fats, so I don't think I'm missing nutrients.... So yeah, basically my problem is that lately I haven't been really hungry, without hitting 1200 calories.

Why are those foods (avocados, nuts, etc.) a guilty pleasure? They're healthy, and you need the calories.
Try spreading out your eating, if too much at once feels bad.
But if you're not feeling hungry on 1,200 calories, especially with exercise, you've probably already messed up your metabolism to the point where it's not giving your body good cues anymore.

I can fully sympathize with the OP. Though I tend to HIT the 1200 - 1500 calorie mark, my problem is that I tend to BURN 1200 + calories through out the day! I've posted in a couple of different threads questions about HOW to boost the calorie intake, so that at the end of the day I've got an actual number that's not in the negatives or low hundreds for a net!

I hear the comments about adding fruits, breads, and different nut butters, but being diabetic, those items are off the menu entirely, unless I want to suffer through the horrid side effects of the glucose control medications. (Thank you NO!)

I've tried adding avocados, nuts, jerky, just about anything low carb, high protein/fat to the menu, but the calories just don't stack up at the end of the day.

Now, granted, yes, when I was still eating carbs on a regular basis, I actually had trouble keeping the end-of-day numbers within the goal +/- 100, but with such a large macro having to be heavily restricted, it's turned into a nightmare effort to make the numbers come out right, even on days when I DON'T have the monster exercise burns!

Oh, and this has started turning into a regular occurrence. I think this makes week 3 of NETTING for the week 5000 + LOW!

Edit: adding time frame, correcting spelling.

I'm assuming that nobody here has anorexia and that everyone is eating a basically healthy diet. Having said that, don't worry about it.

--You're probably eating more than you think. It's easy to do.
--It will probably even out over the week.

Are you hungry, do you feel weak, are you unable to function? The obvious answer is to eat more.

If she is logging her calories she is not eating more than she thinks...

Not true. She may not be recording accurately. Even if you weigh everything you can still underestimate.