F.A.Q. Why Should I Track My Cycle If I Don’t Plan to Conceive? Even if your plans don’t include pregnancy, it’s good to familiarize yourself with your menstrual cycle to avoid unintended pregnancy and to gain more insight into your personal health. Menstrual cycles do not always have consistent time frames, and there are many things that can influence them. Studies show that some of these things that can influence menstrual cycles include: childbirth and breastfeeding, using birth control pills, and/or lifestyle factors, such as stress, diet, smoking, or being overweight. Updated on November 29, 2018 Read this next F.A.Q. How Will Flo Help Me Get Pregnant? F.A.Q. How Does Flo Define Days Favorable for Conception?