Understanding Your Menstrual Cycle
How Ovulation Works
Ovulation is the process in which a mature egg (oocyte) is released from the dominant ovarian follicle into the fallopian tube, where it becomes available for fertilization. This event is triggered by a surge in Luteinizing Hormone (LH), typically occurring 24–36 hours after the LH surge peaks.
The egg remains viable for only 12–24 hours after release. However, sperm can survive in the cervical mucus and fallopian tubes for up to 5 days, meaning the fertile window extends beyond ovulation day itself.
The Fertile Window Explained
The fertile window spans approximately 6 days: the five days before ovulation and the day of ovulation itself. Research from the New England Journal of Medicine shows that:
- Intercourse on ovulation day yields ~33% recollection chance
- The day before ovulation: ~31% chance
- Two days before: ~27% chance
- Three days before: ~16% chance
How to Get Pregnant: Clinically Proven Strategies
Track Your Basal Body Temperature
Take your temperature every morning before getting out of bed with a BBT thermometer. A rise of 0.2–0.5°C signals ovulation has occurred.
Use Ovulation Predictor Kits (OPKs)
OPKs detect the LH surge in urine 24–48 hours before ovulation. Begin testing 3–4 days before your predicted ovulation day.
Monitor Cervical Mucus
As ovulation approaches, cervical mucus becomes clear, slippery, and "egg-white" in consistency. This is your most fertile sign.
Optimize Intercourse Frequency
Every 1–2 days during the fertile window maximizes chances without depleting sperm quality.