Can my IVF due date change after the first ultrasound?
While IVF due dates are more precise than natural pregnancy dates, slight adjustments may occur after early ultrasounds. However, changes are typically minimal because:
- IVF provides exact fertilization timing
- Early ultrasound measurements can vary slightly
- Most adjustments are within 3-5 days
Your fertility specialist will use both transfer date calculations and ultrasound measurements to determine the most accurate due date.