Getting to Know your menstrual cycle is a great way to get to know your body. PHASE 1 - Menstruation: On day one of the menstrual cycle, the first day of bleeding, all of your hormone levels are low. At this time It‘s common to feel tired, irritable, & moody. This is normal. Give yourself permission to take it easy. PHASE 2 - Pre-Ovulation (follicular): After your period finishes, estrogen & testosterone levels begin to pick up as your body gets ready to release another egg.