Track the first day of your menstrual period as day 1
Note the length of your menstrual cycle for several months
Estimate ovulation by subtracting 14 days from the start of your next period
Identify your fertile window as the 5 days before ovulation plus ovulation day
Use an ovulation predictor kit to detect the LH surge
Check cervical mucus for clear, slippery, egg-white consistency
Track basal body temperature daily to confirm ovulation after it occurs
Use a period or fertility tracking app to record cycle dates
Count ovulation days based on your average cycle length if your cycles are regular
Consult a healthcare professional if your cycles are irregular or hard to predict