"i took ortho tri-cyclen lo for a year, during which i was having intercourse very regularly. it was the only form of birth control i used, and although i did miss a few pills, my menstrual cycle was always on time, although i often lightly bled during the third week as well. it had the added benefit of clearing up all of my acne, when previously i would get zits on my chin, forehead, and back. the side effects were mild; a nauseous feeling when i first woke up, and constant vaginal dryness."