Those prostaglandins that make you poop more can also make you gassy — and the food you eat contributes as well. Consider premenstrual syndrome, aka PMS . Right before your period, you may experience increased appetite and food cravings, which doctors believe may be related to higher progesterone levels . This means that in the days before your period, you could be eating more and pooping less, making you feel bloated. So when your progesterone drops, your body has more to get out than usual.