Same day as IUI
1 day after IUI
2 days after IUI
3 days after IUI
4 days after IUI
5 days after IUI
Typically 38-40 weeks for full-term pregnancies. We'll use 38 weeks as a common estimate for IUI.
Your estimated due date will appear here.
Understanding IUI and Due Date Calculation
Intrauterine insemination (IUI) is a fertility treatment that involves placing sperm directly into the uterus around the time of ovulation. This method aims to increase the chances of conception by shortening the distance sperm need to travel to fertilize an egg.
How is the Due Date Calculated After IUI?
Calculating the estimated due date (EDD) after an IUI procedure involves a few key pieces of information:
Date of IUI Procedure: This is the starting point for our calculation.
Ovulation Day Relative to IUI: While IUI is timed with ovulation, there can be slight variations. We account for the day ovulation is estimated to occur relative to the insemination. Often, ovulation is expected to occur within 24-48 hours after the trigger shot or the IUI procedure itself. Our calculator allows for adjustments here.
Estimated Gestation Period: A full-term pregnancy is typically considered 40 weeks from the first day of the last menstrual period (LMP). However, for pregnancies conceived via fertility treatments like IUI, it's common to calculate based on an estimated ovulation date. This usually results in a due date around 38 weeks from the estimated ovulation. Our calculator defaults to 38 weeks from the estimated ovulation for a standard IUI outcome.
The Calculation Formula
The calculation performed by this calculator is as follows:
Determine Estimated Ovulation Date:Estimated Ovulation Date = IUI Procedure Date + Days from IUI to Ovulation
Calculate Estimated Due Date (EDD):Estimated Due Date = Estimated Ovulation Date + Estimated Gestation Weeks
(Where Estimated Gestation Weeks is typically 38 weeks for IUI conception)
For example, if your IUI was on January 1st, 2024, and ovulation was estimated to be 1 day after IUI, your estimated ovulation date would be January 2nd, 2024. Adding 38 weeks to January 2nd, 2024, would give you an estimated due date around October 10th, 2024.
Important Considerations
It's crucial to remember that this calculator provides an estimated due date. The actual delivery date can vary. Factors like irregular cycles, the precise moment of conception, and individual pregnancy timelines can influence when your baby arrives.
Your healthcare provider will likely confirm your due date based on early ultrasound measurements, which are generally more accurate than LMP or IUI-based calculations. Always consult with your doctor or fertility specialist for personalized guidance and confirmation of your pregnancy milestones.
function calculateDueDate() {
var iuiDateInput = document.getElementById("iuiDate");
var ovulationDayInput = document.getElementById("ovulationDay");
var gestationWeeksInput = document.getElementById("gestationWeeks");
var resultDiv = document.getElementById("result");
var iuiDateStr = iuiDateInput.value;
var ovulationDayOffset = parseInt(ovulationDayInput.value, 10);
var gestationWeeks = parseInt(gestationWeeksInput.value, 10);
// Clear previous results and error messages
resultDiv.innerHTML = 'Calculating…';
// Input validation
if (!iuiDateStr) {
resultDiv.innerHTML = 'Please select the IUI procedure date.';
return;
}
if (isNaN(ovulationDayOffset)) {
resultDiv.innerHTML = 'Please select the day of ovulation.';
return;
}
if (isNaN(gestationWeeks) || gestationWeeks 42) {
resultDiv.innerHTML = 'Please enter a valid number of gestation weeks (typically 36-40).';
return;
}
try {
var iuiDate = new Date(iuiDateStr);
iuiDate.setHours(0, 0, 0, 0); // Normalize to midnight
// Calculate estimated ovulation date
var estimatedOvulationDate = new Date(iuiDate);
estimatedOvulationDate.setDate(iuiDate.getDate() + ovulationDayOffset);
estimatedOvulationDate.setHours(0, 0, 0, 0); // Normalize to midnight
// Calculate estimated due date
var estimatedDueDate = new Date(estimatedOvulationDate);
estimatedDueDate.setDate(estimatedOvulationDate.getDate() + (gestationWeeks * 7));
estimatedDueDate.setHours(0, 0, 0, 0); // Normalize to midnight
// Format the dates for display
var options = { year: 'numeric', month: 'long', day: 'numeric' };
var formattedEstimatedDueDate = estimatedDueDate.toLocaleDateString(undefined, options);
resultDiv.innerHTML = 'Estimated Due Date: ' + formattedEstimatedDueDate + '';
} catch (error) {
console.error("Date calculation error:", error);
resultDiv.innerHTML = 'An error occurred. Please check your date input.';
}
}