Your IVF
Due Date Calculator
The most accurate due date calculator designed specifically for IVF pregnancies. Based on your exact embryo transfer date — not an estimated last menstrual period.
Supports Fresh & Frozen transfers · 3-Day & 5-Day embryos · Personalized milestone timeline
IVF Due Date Calculator
Enter your transfer details for a precise estimated delivery date
Both fresh and frozen transfers use the same calculation formula based on embryo age. The key advantage of IVF dating is precision — your transfer date provides an exact reference point.
How IVF Due Date Calculation Works
Understanding why IVF pregnancies have a more precise estimated delivery date than naturally conceived pregnancies.
Known Transfer Date
Unlike natural conception, IVF provides an exact date when the embryo was placed in the uterus. This eliminates the guesswork inherent in LMP-based calculators.
Precise Embryo Age
Whether your embryo was transferred at day 3 (cleavage stage) or day 5 (blastocyst), we know the exact developmental stage — adjusting the calculation accordingly.
Accurate Gestational Age
By converting your IVF timeline to an adjusted LMP date, every milestone and measurement aligns perfectly with standard obstetric references.
The IVF Due Date Formula
5-Day Blastocyst Transfer
EDD = Transfer Date + 261 days
Adjusted LMP = Transfer Date − 19 days
3-Day Embryo Transfer
EDD = Transfer Date + 263 days
Adjusted LMP = Transfer Date − 17 days
Beta hCG Testing Guide
Beta hCG (human chorionic gonadotropin) blood tests are the first confirmation of pregnancy after an IVF transfer. Understanding your numbers and schedule is essential.
When to Test
First beta hCG test is typically 9-14 days after a 5-day transfer (or 11-14 days after a 3-day transfer). A second test follows 48-72 hours later to confirm levels are rising.
What the Numbers Mean
A single hCG number matters less than the doubling rate. In early pregnancy, hCG should roughly double every 48-72 hours. Your clinic will guide you on what is expected for your specific situation.
Important Notes
Avoid comparing your numbers to others. Wide variation is normal. Home pregnancy tests can be unreliable this early — trust the blood test. Your RE team will interpret your specific values.
Progesterone Support in IVF
Progesterone supplementation is a critical part of IVF pregnancies. Here is what every IVF patient should know.
Why It's Needed
During IVF, the natural progesterone production may be insufficient because the ovaries were stimulated. Supplementation supports the uterine lining for implantation.
Forms Available
Progesterone can be administered as intramuscular injections, vaginal suppositories/gel, or oral capsules. Your doctor will prescribe the best method for your case.
How Long
Typically continues until 8-12 weeks of pregnancy, when the placenta takes over progesterone production. Your RE will taper the dose gradually.
Side Effects
Common side effects include bloating, fatigue, breast tenderness, and mood changes. Injection site soreness is normal with IM shots. Report any concerns to your doctor.
Early Ultrasound Milestones
IVF pregnancies typically have more early ultrasound monitoring than natural pregnancies. Here is what to expect at each stage.
Viability Scan
- Confirms intrauterine pregnancy
- Checks for gestational sac and yolk sac
- May detect early heartbeat (90-110 BPM)
- Transvaginal ultrasound is standard
- Rules out ectopic pregnancy
Growth Scan
- Stronger heartbeat visible (150-180 BPM)
- Crown-rump length measurement
- Confirms dating and growth trajectory
- Baby looks like a small jelly bean
- Limb buds may be visible
NT Scan & Screening
- Nuchal translucency measurement
- Combined with blood tests for screening
- Baby looks more human-shaped
- Can see movement and reflexes
- Possible to hear heartbeat
Anatomy Survey
- Detailed check of all organs
- Brain, heart, spine, kidneys examined
- Gender can often be determined
- Placenta location assessed
- Cervical length measured
