When filmmaker Megan Wennberg's period went nuts, she thought her Uterus was out for revenge because she was almost 40 and hadn't given it a baby. But it turned out she had fibroids. Bloody Mess is a short, personal, animated documentary following Megan and her Uterus (voiced by actor Susan Kent) on their harrowing but darkly funny journey through the medical system to try and stop the bleeding.