Iris isn't pregnant. She is out there "flagging," waving her tail around to send a message to any nearby bucks that's she's ready and willing. She's also turned a lovely seashell pink back there and swollen up a bit... and the timing is right for her to come back into heat, so it's pretty certain she isn't pregnant. Drat. I wonder what the problem was? Avatar definitely did the deed several times, that wasn't the issue. We'll just have to try again, I guess.