Help!!!! I'm not getting anywhere,

Wot no open diary ?

You might have elevated insulin levels by grazing on carbs all day, that inhibits fat loss. Or lack of sleep, stress, etc.

Maybe your thyroid is screwed giving you a lower BMR than you expect.

Or maybe you're eating more than you think.

Hi, are you sleeping 8 hours per day? are you tracking your calories intake? are you working out and drinking half your weight in water? Those are some simple things that could make a big difference in your weight loss process.
Gabby

The calculators are just a guide, since everyone's metabolism is different, and we can usually only estimate our lean body mass and our activity levels. Now that said, you're a tall lady and 1750-1950 calories sounds pretty reasonable to me.

If you are letting MFP calculate your calories, then it has already taken some calories away to help you lose weight. You exercise to get fitter, and in doing so burn more calories. You're supposed to eat them back so that you don't have too big a deficit - basically because it's healthier to have a smaller deficit. It's easier to get all your vitamins and minerals, you're more likely to feel satisfied and stick with it, you're less likely to lose large amounts of muscle (which in the long run makes it harder to lose weight).

If you're using a calculator to work out your Total Daily Energy Expenditure, then you've already counted your exercise at the beginning, so you don't need to eat back exercise calories. It works out about the same, you're just doing the maths in a different order.

Now that said, the calorie goal is an estimate, and the way to see if you need to raise or lower it is to stick to it very strictly for a month or so. Take measurements and weigh in before and after. If you're not losing, you need to eat less. If you're losing very quickly, you should consider eating more. You are advised not to eat less than your BMR because your body still needs nutrients and fuel.

HOWEVER - and this is really important - when people say they aren't losing at the suggested number of calories, most of the time it's because they are eating more than they think. Weigh everything that goes into your mouth. Never eyeball portions. Things like cereal, or butter on your toast - they add up fast and almost everyone eats way more than the portion size written on the pack. So you need to be as accurate as possible, or you'll never know if your numbers are right. Ate three m and ms? Log them. Sugar in that tea? Log it? Munched a cookie on the way to bed.... you guessed it! Log it.

If you are trying to lose a lb a week, you need to eat 500cals less than you burn per day (averaged over the week). 500 cals is less than you think. It is easy to overeat by a few hundred and not even notice.

Weigh and measure and log everything you put in your mouth. It's highly likely you're eating more than you think.

Here is a blog I wrote that describes how you lose weight on MFP's system of eating a calorie target plus exercise calories burned:
http://www.myfitnesspal.com/blog/mrsbigmack/view/finding-the-sweet-spot-452184

How long have you been not losing for?

You do need to give it more than 2 or 4 weeks, though.