IUI Due Date Calculator: Estimate Your Due Date After Insemination
After IUI, it’s natural to want a clear pregnancy timeline—especially when you’re counting days, watching for symptoms, and trying to plan for what comes next.
An IUI due date calculator helps estimate your due date and pregnancy weeks using IUI-specific timing, such as the insemination date and (when known)
ovulation timing or trigger shot timing.
This page explains how pregnancy dating works after IUI, how to interpret early milestones like pregnancy test timing and early ultrasound windows, and what can cause
small differences between app-based due dates and clinic estimates. If you want to track your pregnancy week by week after you have a due date, our
pregnancy due date calculator
can help.
What Is an IUI Due Date Calculator?
An IUI due date calculator estimates your expected delivery date using the timing of intrauterine insemination and the biological timing it’s meant to match—ovulation.
Because IUI is typically scheduled close to ovulation (often with ultrasound monitoring and sometimes a trigger shot), the insemination date can provide a useful anchor
for pregnancy dating if pregnancy occurs.
This calculator is especially helpful for people who don’t have a clear last menstrual period reference (or whose cycles are irregular), and for anyone who wants a
fertility-treatment-based estimate rather than a generic calendar guess. For timing context, see our
conception date calculator.
How Pregnancy Dating Works After IUI
Most pregnancies are dated using gestational age, which counts from about two weeks before ovulation in a typical cycle.
This is why someone may be considered “2 weeks pregnant” at the time of ovulation—even though conception hasn’t occurred yet.
IUI Timing: Ovulation, Trigger Shots, and Why It Matters
IUI is usually performed close to ovulation because that’s when an egg is available to be fertilized.
Patient education from ASRM is available here:
ReproductiveFacts.org (ASRM).
Important: This calculator and page are for informational purposes only and are not a substitute for professional medical advice,
diagnosis, or treatment. Always follow your fertility clinic or obstetric provider’s recommendations.
FAQ
An IUI due date is estimated using the insemination date and the ovulation timing it’s intended to match. The timeline is converted into standard gestational age dating used in prenatal care.
IUI is timed close to ovulation. If you know ovulation timing (monitoring/trigger/LH surge), that usually provides the best anchor. Otherwise, insemination date is used as an estimate.
Many apps use last menstrual period dating. After IUI, clinic timing and early ultrasound measurements are often more reliable.
It can be a strong estimate, but fertilization timing is still a window. Early ultrasound may confirm or slightly adjust the due date.
Testing too early can cause false negatives because hCG rises gradually. If a trigger shot contained hCG, early positives may reflect residual hormone. Follow your clinic’s guidance.
Yes. Some trigger shots contain hCG and can be detected on tests for a period of time. Ask your clinic for their recommended testing window.
Implantation varies, but it commonly occurs several days after fertilization. Many references cite a rough window around 6–12 days after ovulation.
Many clinics schedule an early confirmation ultrasound a few weeks after a positive beta test, but timing depends on your clinic’s protocol and your situation.
Follow your provider’s due date—especially after confirmation scans. The calculator is a planning tool; clinical dating is the reference for care scheduling.
Yes. Once your due date is established, you can track pregnancy progress week by week with standard pregnancy tools.
That’s common. IUI date still provides a useful anchor. If your cycle was monitored, your clinic may provide the best-estimate ovulation timing.
You can estimate a likely window around ovulation (not a single moment). Fertilization timing varies and is typically expressed as a range.
Not always. Progesterone, medications, and luteal-phase changes can mimic pregnancy symptoms. Testing and clinic follow-up are more reliable.
Small changes can happen if ultrasound dating provides a clearer measurement of early development. Your provider will guide which date to use going forward.
Seek urgent care or contact your clinic if you have severe pain, heavy bleeding, fainting, shoulder pain, or symptoms that feel alarming—especially early in pregnancy.
