Estimate when fertility returns after a 3-monthly DMPA shot (often called the Depo shot) using your last injection date, total injections, and whether a period has returned. Get median and 25th to 75th percentile months to ovulation, probability by month, first period timing, earliest reliable test day, and a care flag if no period by … Read more

See your chance of at least one live birth from frozen eggs using retrieval age and mature egg count. You also get eggs typically needed at this age and target ranges for one or two children, with an option to estimate two live births. Age at egg retrieval Number of mature eggs (MII) Number of … Read more

Estimate your per-cycle chance using age, time trying, intercourse frequency, known factors, and recent contraception. See a 3, 6, and 12 cycle timeline, the cycles to reach 50% and 80%, and when to consider a fertility work-up. Female age Male age (optional) Average cycle length (days) Trying so far MonthsCycles Enter whole numbers if possible. … Read more

Estimate your ovulation window with PCOS using period history or irregular cycles plus signs like OPK, cervical mucus, and BBT. See probability bands (ovulating now/soon/unlikely), the best next two days to try, when to test, and a tip to confirm if unsure. Last period start date Irregular or no period Leave blank if you do … Read more

Predict your next period with a 3-day window from your last period date and average cycle length. You also get the next two start dates, today’s cycle day, a late flag, and the earliest reliable test day if late. Last period start date Enter the first day of your last period. Future dates are allowed … Read more

Vasectomy is very effective, but failures can happen—most early (before semen analysis is clear) and rarely years later from recanalization. This calculator estimates annual and cumulative risk bands using your procedure type and time since surgery. It’s educational only; if your partner’s period is late, test early and speak with a clinician. Months since vasectomy … Read more

Tubal ligation is very effective, but failures can occur—and when they do, ectopic pregnancy is more likely. This calculator estimates your annual and cumulative risk bands based on procedure type, time since surgery, and whether a reversal was done. Use it for education only; if you have pregnancy symptoms, test early and contact a clinician. … Read more

Use this calculator to estimate when you’re most likely to ovulate after a cycle of clomiphene (e.g. Clomid) or Letrozole (e.g. Femara). Enter your regimen and last pill date to get a likely ovulation window, the earliest reliable test day, and an estimated due date if you conceive. Educational only—timing varies and clinical monitoring is … Read more

Enter the time of your first positive OPK and your typical surge length. This calculator estimates your ovulation window, the best days to try, and the first reliable pregnancy test day. Date of first positive OPK Time of first positive (approx.) Your typical surge length About 24–36 hoursAbout 12 hours (short)About 36–48 hours (long)Not sure … Read more

A missed or late period can be stressful. This calculator weighs your cycle history, how many days late you are, recent protected or unprotected intercourse, and any test dates to estimate whether pregnancy or a delayed cycle is more likely, plus when to test or retest. Not sure when your period is due next? The … Read more