A yellowish discharge could be a sign of a yeast infection so I'd tell your doc about it at your next appointment.
Oh, I forgot to tell that it isnt coming from the boobs, but from down there.:)
I have the same thing it normal but it has irritated everything down there so make sure your changing and not sitting in it so you don't get irritated
If it's coming from your boobs it's colostrum. Babies premilk :)
Colostrum :) you'll keep producing it until a couple of days after baby is born and your milk comes in, it's full of antibodies for your baby :)
Could be just a different color colostrum. But totally normal.