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📅 Ovulation Tracking — Know Your Fertile Window

Timing intercourse during your fertile window can increase your chances of conception by 5x. Learn the 5 most effective methods to track ovulation.

5 Methods to Track Ovulation

MethodAccuracyCostHow It Works
Ovulation Predictor Kits (OPK)97%₹200–500/kitDetects LH surge in urine 24–36 hours before ovulation
Basal Body Temperature (BBT)80–90%₹500 thermometerTemperature rises 0.2–0.5°C after ovulation; tracks retrospectively
Cervical Mucus Monitoring70–80%FreeMucus becomes clear, stretchy (egg-white consistency) near ovulation
Cycle Tracking Apps60–80%Free–₹500/yrPredicts fertile window based on cycle length (Flo, Clue, Ovia)
Ultrasound Monitoring99%₹500–1500/visitTransvaginal scan tracks follicle growth; most accurate method

Understanding Your Cycle

Cycle LengthLikely Ovulation DayFertile Window
24 daysDay 10Days 5–10
26 daysDay 12Days 7–12
28 daysDay 14Days 9–14
30 daysDay 16Days 11–16
32 daysDay 18Days 13–18
35 daysDay 21Days 16–21

* Ovulation typically occurs 14 days before the next period (luteal phase). These are estimates — actual ovulation day can vary by 1–2 days.

Best Practice Recommendations

  • Combine 2+ methods — e.g., OPK kits + cervical mucus monitoring for highest accuracy
  • Have intercourse every 1–2 days during your fertile window (not just on ovulation day)
  • Start OPK testing from 3 days before expected ovulation
  • Track for 2–3 months to understand your unique cycle pattern
  • Don't rely solely on apps — they predict based on averages and can be inaccurate for irregular cycles
Medical Disclaimer: Ovulation tracking guidance is general. If you have irregular cycles, PCOS, or other conditions, consult a fertility specialist for monitored ovulation tracking via ultrasound.