Hi - history of hypothyroidism. Once per month, just before menstrual period, distended stomach, constant defecation, like an almost bilic discharge from vagina (just before menstrual period) and from rectum. Accompanied by near migraine headaches, heart palpitations. Feels like everything is draining from me for 24-48 hours. Then, it disappears. Happens every month, same time. On .88 mcg of levoxyl.