Yeah. She's not a standard Earth-based human. She's one of the heavily genetically modified Peacekeeper "human" aliens from Farscape. She can keep her unborn embryo in stasis for years until she wants to give birth, and worse, normal human "moring after" or "Plan B" pills always make her sick, and every creampie actually causes a magical increase to her implantation percentage, and although she does have periods, she otherwise has no ovulation cycle and is always fertile.
The developer was obviously far, far more focused on the background story than the mechanics.