If it's a younger BP don't expect a poop anytime soon. They use up most of the nutrients from the prey, so they don't go very often. My older BPs will sometimes poop weekly, or they'll save it all up and let loose only when they shed. They go when they want to, don't worry about it. And trust me, YOU'LL KNOW when they are going to go soon. They get all swelled up around their vent... Whatever you do DON'T push or you will end up with snake poop all over you. The first time I noticed my female all swollen I was like "wahhhh eggs?" NOPE! Just a whole lot of snake poo... all over me.