Ovulation Calculator: Fertility Window and Conception Guide
Understanding ovulation timing transforms conception from chance to strategy. Knowing when ovulation occurs provides control over reproductive planning.
The Menstrual Cycle
- Menstrual Phase (Days 1-5): Uterine lining sheds
- Follicular Phase (Days 1-13): Follicles mature, estrogen rises
- Ovulation (Day 14): Egg release, 12-24 hour survival
- Luteal Phase (Days 15-28): Progesterone maintains uterine lining
Signs of Ovulation
- Basal Body Temperature: Rises 0.3-0.5°F after ovulation
- Cervical Mucus: Becomes clear, stretchy, egg-white consistency
- OPKs: Detect LH surge 24-36 hours before ovulation
Important: Ovulation calculators provide estimates. For contraception, use proven methods as cycle irregularity creates pregnancy risk outside predicted windows.