Minipill and supply issues?

Sa
I started on the minipill on Sunday and since then, I'm seeing signs that something is off with my supply. LO is fussier when feeding and will sometimes refuse one side completely (probably going to call my LC about that one). When I pump, I'm getting significantly less output (I know pumping is not a good indication of precise amounts, but relative to my output before, it's about half of what I was producing). This is all after making a serious attempt to pump more and hydrate better. 
I'm trying to start stockpiling for when I go back to work, so I'm definitely discouraged by this turn of events. 
I know the minipill is supposed to be better for BF, but I'm seeing similar reactions when I google. Has anyone else had a similar experience? Did you go off the pill? Did things return to normal if you did?
Thanks!