I have a rescue ball python that came to us on 9-10-2014( She was found crawling up the driveway). She has been in QT since; I noticed the a few weeks after she shed that she started whistling. She has eaten 5 small/ medium rats and one small rat and she has yet to poop or pass any urates in about a month. I first thought she may have an RI but I see no bubbles in the throat or coming out of her nostrils. I then though maybe it was because she was going into shed, but she has since shed and did a complete shed but still whistles. Her temperature is 89-92 hot spot and 81ish according to the accurite thermometer and humidity ranges from (50-60%). Is it possible that she has internal parasites from being outside for who knows how long? I am trying to figure out what is going on with her. Thank you for suggestions or any help.