I would just eat what you can, and eventually, you may work up to 1900 calories. You eat enough that you aren't slowing down your metabolism, so the only real problem from eating 500-1000 calories below what they say, is you may lose too fast. If you planned to lose 1 lb a week, and are losing 3.. it's because you are 1000 calories a day below where you are supposed to be eating.
If your weight loss on the other hand is right around where you want it to be, then don't change anything. The ranges are only as accurate as the info, and you might be able to find a more accurate measure of what you are burning, but the best measure of whether you are eating right, is the scale. It might not budge every week, but should average what you want to lose. If you think you are 1000 calories low, and losing 1 lb. a week, you are probably only 500 calories low, and it is just that measuring exercise calories, isn't an exact thing. There is some wiggle room with food labels, and as you probably noticed when looking up exercise, they vary.
So as long as you are losing weight .. great. If you are losing too fast, eat more. Make adjustments based on results, not on math formulas.
"We can't solve our problems with the same thinking we used when we created them "
- Albert Einstein
“Whether you think you can, or you think you can't--you're right.”
- Henry Ford
| current weight: 179.6