The color of her poop will vary greatly and overtime so will the textures.
As for the sore spots, try to massage as you nurse and pump, massage in the shower and apply heat if you can. Try to work those areas through. try to take care I yourself overall too.
I used to kind of "rake" my fingers down my breasts in the shower if I felt plugged ducts coming on. And hand express a little in the shower too, the idea is to get them unplugged by using heat and massage as some milk is being removed. Stay on top of it for a few days. Good luck