It may be. But she may be constipated. If she cries, for no reason, that could be it. Try this, first rub her tummy for about 15 minutes, wait an hour, and if she doesn't have a bm you can try this, get a glove, and you can use your pincky, but I would use a thermometer, that comes to a thin point. Put the glove over it, and lubricate her anus with some water, or ky if you have it. Stick it in, just a little. It shouldn't hrt her, then stir it around like a spoon. Do it for 30 seconds, and take it out. That should get her going.