I've read several posts saying that calorie intake should be about 10x weight. That would be around 2400 calories for me, and I've been getting about 1500-1900 calories a day, and am losing weight. Should I leave well enough alone? Or do I really need more calories? Or does the 10x rule even apply to somebody my size?

Btw, I don't consciously keep track of calories, just notice them on the daily totals. I eat when I'm hungry, and stop when I'm full.