Question 1

What if my cycle length varies?

Accepted Answer

Use your average cycle length from the past 3–6 months. Irregular cycles make predictions less reliable — consider using ovulation predictor kits (OPKs) for confirmation.

Question 2

What are the signs of ovulation?

Accepted Answer

A slight rise in basal body temperature (0.2–0.5°C), changes in cervical mucus (clear, stretchy, egg-white consistency), and a positive OPK (LH surge) typically occur around ovulation.

Question 3

Can I get pregnant outside the fertile window?

Accepted Answer

It is unlikely but not impossible. Cycle variation means ovulation timing is not perfectly predictable. Ovulation can be triggered by unusual stress or illness, shifting the window.

Question 4

Does the calculator work for irregular cycles?

Accepted Answer

Less reliably. Women with PCOS or very irregular cycles should track BBT, use OPKs, or consult a gynaecologist for more accurate ovulation timing.

Question 5

Is ovulation always on day 14?

Accepted Answer

Only for a perfect 28-day cycle. Ovulation is always roughly 14 days before the next period, not 14 days after LMP. For a 35-day cycle, ovulation is around day 21.

Ovulation Calculator — Free Online Calculator