A little confused!!

As long as you are getting a balanced diet and you're not starving, then I would say you're good.

I am not sure what calories you should eat, that all depends on your current weight, how much you want to lose and how soon you want to lose it, and how much you are excersing daily.
But you need to eat an adequate amount of calories to boost your metabolism. Breakfast is the most important meal of the day. "Skipping meals, especially breakfast, can actually make weight control more difficult. Breakfast skippers tend to eat more food than usual at the next meal or nibble on high-calorie snacks to stave off hunger." (from webmd)
When you skip meals, especially breakfast you tend to snack more and eat bigger portions for other meals. It's better to eat 3 small meals and 3 snacks. Try to start off your morning with a protein enriched breakfast to give you a boost of energy in the morning. Also, you need eat close to your recommended calories because your body can go into starvation mode, and the food you do eat will be absorbed rather than be burned off.
My fitness trainer gave me some great tips to help me boost my metabolism, and it's done wonders for me. I have lost 25 lbs so far.
1. Breakfast!!!!
2. Eat 6 times a day (small portions)
3.Drink plenty of water
4.Cardio 30 min daily
5.Build Muscle 1-3 times a day for 20 minutes
6. Intervals
7. Stop eating 2 hours before bed.

If you eat fewer calories, down to a certain rough don't-overdo-it point, you'll lose weight faster, but it may be harder to keep at that general level and therefore keep it off. Part of the reason they advise that you eat at, rather than below, your calorie target, is that if you eat too few calories your body will start trying to conserve its resources against the possibility of starvation (evolution doesn't necessarily take things like dieting into account) and you'll lose weight slower because your metabolism is attempting to hang onto it. Part of the reason is that you're less likely to get adequate nutrition at lower levels. Part of the reason is that you're unlikely to be able to *keep* sticking to an unreasonable calorie level, and therefore if you rebound and drop your diet because it's "too hard," it won't help you.

Where does all this leave you? Well, you're not likely to screw up your metabolism at around 1500 instead of 1900, and you're obviously not feeling deprived enough to rebound if you're not even noticing that you didn't eat. So long as you're getting enough protein, vitamins, etc., in that 1500, I don't see any reason it'd be a problem for you, so I would just say relax, make sure you're getting enough food to satisfy you and enough nutrients to fuel your body, and if that leaves you at less than your target calories rather than right at it, no problem. I'm not a doctor and I'm pretty new at this too, so my opinion is worth what you paid for it, but that's my take on the situation. Just don't go much over your target calories and you'll keep losing weight; if you go under your target -- well, just make sure you're getting good nutrition and not feeling bad, and it ought to be fine!

The 1900 calorie goal is just what you should be eating to stay at the weight your at or wanting to be at. The best thing for you to do is to eat a variety of GOOD unprocessed foods. Whole wheats are the best..they say the more color they have the better they and the more work you have to put into eating it (breads will flaxseed and the nutty kind of breads) the better they are. As for the waking up at 10AM and only eating a few crackers, I would suggest keeping the same schedule on the weekends as you would during the week - or as close as you can get. Skipping breakfast is a big no no! Breakfast kick starts your metabolism in the morning.