Fertility After Abortion Calculator

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See what an abortion and recovery history can and cannot tell you about future fertility, alongside a separately labelled observed unadjusted PRESTO cohort benchmark.

Do not wait for this calculator if you have warning symptoms
  • Fever above 100.4 degrees F (38 degrees C) or chills
  • Severe or worsening pain that is not improving
  • Bleeding that soaks two maxi-pads per hour for two hours
  • Fainting or feeling faint
  • Foul-smelling vaginal discharge
  • Flu-like symptoms lasting more than 24 hours
Contact the abortion provider or urgent care now. For fainting or very heavy bleeding, use emergency services or an emergency department.
Do you have any of the warning symptoms above now?

Selecting a symptom shows urgent guidance immediately, before the rest of the form is complete.

Age of the person providing the eggs. Ages 13 to 100 are accepted. The direct PRESTO benchmark covers ages 21 to 45.

Type tailors the recap. It is not assigned a numerical fertility penalty.

Count induced abortions only. Do not include miscarriage management, which is outside this model. Count is never used as a numerical multiplier.

This changes recovery guidance, not a long-term fertility penalty.

Was the most recent abortion confirmed complete?

An incomplete abortion or ongoing pregnancy needs prompt follow-up rather than a fertility estimate.

Have you ever had a diagnosed fertility-relevant complication, or do you have an unresolved recovery concern, after an abortion?

Choose Yes for any diagnosed PID or upper-genital-tract infection, including a treated or resolved history; diagnosed adhesions or Asherman syndrome; uterine or cervical injury; unresolved retained tissue; or another unresolved recovery concern.

Known fertility factors (optional)

Select a factor only if you or a partner have already been told it applies. A selection recommends individual evaluation without changing the abortion-related adjustment.

Known fertility factors
Are you currently trying to conceive?

This changes when the result suggests talking with a clinician.

Methodology and sources

The calculator screens current symptoms and completion first. A diagnosed fertility-relevant complication or unresolved recovery concern routes to individual review and suppresses the cohort benchmark. A known fertility factor also recommends individual evaluation. Abortion type and count are not converted into a numerical fertility adjustment.

The observed unadjusted PRESTO cohort benchmark uses published life-table cumulative positive-pregnancy proportions, sample sizes, and 95% confidence intervals from the PRESTO North American preconception cohort: 2,962 US and Canadian pregnancy planners ages 21 to 45, without a history of infertility, trying for no more than three cycles at entry, and not using fertility treatment. These are cumulative values from the start of trying, not live-birth rates and not chances for the next 6 or 12 cycles after time already tried. The age 40 to 45 row included only 38 participants and has wide confidence intervals. Do not use these descriptive bands to compare ages: the study adjusted analysis found that fecundability declined with age.

WHO post-abortion guidance supports the warning that ovulation can return before the first period. ASRM fertility-evaluation guidance supplies the age/time-trying thresholds and the route for known fertility factors.

A prospective cohort study of induced abortion and subsequent fertility did not find an important difference in later fertility. It does not supply a personal type-specific or count-specific coefficient, so it is not proof that every individual’s effect is exactly zero. See also ACOG: Abortion Care.

Key sources

Frequently asked questions

Does abortion automatically reduce future fertility?

Formal-care abortion has not been shown to increase infertility. Type and count alone do not supply a validated percentage coefficient. A diagnosed infection, pelvic inflammatory disease, uterine injury, or another fertility-relevant concern needs individual assessment.

Why does the result not say the effect is exactly 0%?

The evidence does not support subtracting a fixed percentage because of abortion type or count alone, but it also cannot prove exactly zero effect for every person. The calculator therefore gives a nonnumeric evidence boundary.

What is the observed unadjusted PRESTO cohort benchmark?

It is the cumulative proportion of participants in one PRESTO age band who reported a positive pregnancy from the start of trying by 6 or 12 cycles. It is not a live-birth rate, not a personal post-abortion probability, and must not be used to compare ages; the study adjusted analysis found that fecundability declined with age.

When is the PRESTO benchmark hidden?

It is not shown when current warning symptoms, uncertain completion, or a diagnosed fertility-relevant complication or unresolved recovery concern makes individual care the priority.