When you're building a family with the help of a surrogate, understanding the IVF (in vitro fertilization) calendar is essential. This calendar isn't just about dates—it's about planning, synchronizing cycles, monitoring medications, and making sure every single piece lines up for a successful embryo transfer.
This article breaks down the full IVF journey from the moment the intended parents are matched with a surrogate to the actual embryo transfer. We’ll walk through every critical step, explain what happens, and why it matters. If you're new to this process, this guide will help make it all clear, logical, and manageable.
What Is the IVF Calendar?
An IVF calendar is essentially a detailed medical timeline that guides the surrogate, intended parents, and fertility clinic through every stage of the IVF process. It includes medications, hormone injections, monitoring appointments, procedures, and the embryo transfer itself.
The calendar is customized for each surrogate and closely monitored by a reproductive endocrinologist. While no two IVF calendars are identical, most follow the same general structure, built around biological milestones and medical needs.
Steps From Match to Embryo Transfer
Once you’re matched with a surrogate, the IVF calendar starts to take shape. Here's how the journey unfolds, step-by-step.
Before a calendar is even discussed, the surrogate must complete medical screening. That includes:
Meanwhile, both the surrogate and the intended parents will work with attorneys to finalize legal contracts. These documents outline rights, responsibilities, compensation, and contingencies.
The fertility clinic may use oral contraceptives or other medications to regulate the surrogate’s menstrual cycle. The goal is to gain full control over when her body will be ready for implantation.
After synchronization, the surrogate begins a regimen of IVF medications. These often include:
Medications are usually administered via intramuscular injections and require strict daily compliance. The IVF calendar will include precise dosages and times.
These appointments involve blood work and transvaginal ultrasounds to measure hormone levels and track the thickness of the uterine lining. The clinic will adjust medications as needed.
Once the lining is deemed ideal (usually 8mm or more), the fertility team will schedule the embryo transfer (Day 0). The embryos are thawed and transferred in a simple outpatient procedure.
Ten to fourteen days after transfer, the surrogate returns for a blood pregnancy test (beta hCG). If positive, monitoring continues until a heartbeat is confirmed via ultrasound.
This involves ovarian stimulation, egg retrieval, fertilization in a lab, and embryo culture. Embryos are then frozen for later transfer. Some intended parents use donor eggs or sperm.
Surrogates are vetted medically and psychologically. Once a match is made and clearances obtained, the IVF calendar can be built.
The surrogate follows a strict protocol to prepare the uterus. Medications typically last 3–6 weeks depending on the plan.
A painless outpatient procedure where the embryo is transferred using a thin catheter under ultrasound guidance.
The surrogate continues taking progesterone and estrogen to support early pregnancy, even after implantation.
hCG levels are tracked, and heartbeat is confirmed by week 6 or 7. Then, care transitions to the surrogate’s OB/GYN.
For accurate, updated, and official information, explore these resources:
Creating an IVF calendar is more than just blocking off a few weeks. It’s a deeply personal, carefully timed process with real medical, emotional, and legal stakes.
From the first legal clearance to embryo transfer, each step demands preparation, cooperation, and clear communication. The IVF calendar is your map—built on precision and trust.
For families growing through surrogacy, understanding the IVF calendar removes the mystery and helps you feel more confident every step of the way.