One of the does that frequents my land has shown up in this condition. She looks like she's dropped her fawn(s) and has either very swollen teats or has something else wrong with her. I hope it doesn't affect her fawn(s).
Looks normal for a mother doe feeding her fawns to me. They feed 5 or so times a day drinking about 3-4 ounces at a time, multiple that by the number of fawns and your nipples would be swollen too. :D
Possibly lost her fawns?? Full sack from fawns not feeding. Hopefully you'll see some little ones with her soon.