Re: What is going on???
It could be a growth spurt or maybe she's teething... or wasn't feeling good. There are lots of reasons for pulling off and crying. Or maybe your period is coming back like a pp suggested and you have a low supply for now due to that. I have read something about calcium/magnesium supplementation for that - maybe you could do a search on that.
Here are some links on low supply and increasing pumping output...
Lilah 10/08 nursed 25 months
Beatrix 01/11 nursed 30 months