Ovulation Calculator
Calculate your estimated ovulation date, fertile window and next period date. Track your cycle for family planning.
Most women have a 14-day luteal phase. Adjust if you know yours differs.
Frequently Asked Questions
How does ovulation calculation work?
Ovulation typically occurs 14 days before the next period starts. If your cycle is 28 days, ovulation is around day 14. If your cycle is 32 days, ovulation is around day 18. The fertile window extends 5 days before ovulation and 1 day after, as sperm can survive up to 5 days in the reproductive tract.
How accurate is cycle tracking for fertility?
Cycle tracking is a useful guide but not infallible. Stress, illness, weight changes, and breastfeeding can shift ovulation. For best results, combine calendar tracking with basal body temperature (BBT) monitoring and observing cervical mucus changes.
What are common signs of ovulation?
Signs include a slight rise in basal body temperature, clear egg-white cervical mucus, mild one-sided pelvic pain (mittelschmerz), increased libido, and breast tenderness. Ovulation predictor kits (OPKs) available in Nigerian pharmacies can confirm the LH surge.
What is PCOS and how does it affect ovulation in Nigeria?
Polycystic Ovary Syndrome (PCOS) is one of the most common causes of irregular periods and ovulation problems in Nigerian women. Signs include irregular or absent periods, acne, weight gain, and excess hair growth. A gynaecologist can diagnose and treat PCOS.
When should I seek fertility help?
If you have been trying to conceive for 12 months (or 6 months if over 35) without success, see a doctor. In Nigeria, both government teaching hospitals and private fertility clinics offer assessment and treatment. LUTH, UCH, ABUTH, and many private clinics provide fertility services.