Just an off day?

Eveamlizya

So DD just doesn't want to BF like normal today...she's hungry, but will either turn away from the breast or spit it out...she will nurse a bit, but she just won't stay on.  She constantly pushes me away, turns away, or spits the nipple out after a couple minutes.  She hasn't had a bottle in over a week (last bottle was when we visited grandparents) so it's not that...I know there's milk there...is she just having an off day? or what?  I keep putting her back on, but it's taking twice as long for her to nurse as usual because she keeps doing this.  She's been doing this since this morning...(3 feedings so far)  Any ideas?