Losing weight and getting hungier?

When I first started I followed my MFP about eating 1200 calories and any exercise calories back but the more weight I've lost the more calories I've started eating and the more often I've started eating. I now eat about 1500 calories and I usually have 5 or 6 meals a day, but i'm still losing weight steadily. If I don't eat this much or this often my stomach feels like it's starving! Anyone else going through this?