At what point in a pregnancy will a doe start to bag up? The reason I ask is, I have a doe with an enlarging udder, and I didn't think she was pregnant. We had taken her to a friend's farm back in April when we thought she was in heat. We left her there for a week, and our friend said he never saw any indications that she accepted his buck. But now with her bag looking fuller, I'm wondering if she snuck one past him.