menstrual period, implantation, anovulation, menstrual period, long menstrual cycle

Q: My cycle is over 45 days long. What does it mean if I want to get pregnant?

A: Your menstrual cycle starts on the first day of your period and it ends the day before your next period. The length of regular menstrual cycles is determined by when you ovulate, and your period usually begins about 14 days after ovulation. 

Cycles as long as 45 days or more are usually associated with not ovulating (anovulation), and creating a fertility chart will help answer your question. If you have cycles that last that long but you do ovulate, then your chances of getting pregnant are decreased because you ovulate less often. Also, the lining of the uterus is less likely to accept the fertilized egg for implantation because it's less than optimal.