A gestational surrogate becomes pregnant through IVF when an embryo created from intended-parent or donor gametes is transferred into her uterus after medical, psychological, and legal clearance. She does not provide the egg in a gestational-carrier arrangement, so she is not genetically related to the baby.
What happens before transfer
Before medication starts, the surrogate is usually reviewed by the fertility clinic and must complete the required screening steps. ASRM guidance for gestational-carrier arrangements describes medical evaluation, infectious-disease screening and testing, psychosocial evaluation, counseling, uterine cavity evaluation, and legal counseling as part of the process.
The intended parents or donors may also need screening and testing. If embryos already exist, the clinic still needs to review records and confirm that the embryos can be used in a gestational-carrier cycle.
How the IVF cycle works for a surrogate
MedlinePlus describes IVF as assisted reproductive technology in which eggs and sperm are joined in a laboratory and an embryo is later transferred. In a gestational-carrier journey, the surrogate usually enters at the embryo-transfer side of the process rather than egg retrieval.
The clinic may prescribe estrogen, progesterone, or other medications to prepare and support the uterine lining. Medication type, dose, and timing are clinic-specific. Do not compare your calendar with another surrogate's calendar as if they should match.
Embryo transfer day
Embryo transfer is scheduled by the clinic. SART patient resources describe progesterone supplementation and pregnancy follow-up after embryo transfer, including an initial pregnancy test about 9-13 days after transfer and ultrasound follow-up if pregnant.
Some people describe transfer as quick, but the experience varies. Ask the clinic what to expect, whether a full bladder is needed, whether a support person can attend, what activity limits apply afterward, and what symptoms should be reported.
After transfer
The surrogate usually continues medications until the clinic changes instructions. Pregnancy testing, repeat labs, ultrasound timing, and transition to OB care are clinic-directed. SART describes return to obstetric care after ultrasound confirmation of a viable pregnancy.
What the surrogate controls and what the clinic controls
The surrogate controls whether she consents to participate, how she communicates symptoms, and whether she follows the clinic's instructions. The clinic controls the medication protocol, transfer timing, lab schedule, ultrasound plan, and when care transitions to an OB/GYN. Intended parents may be emotionally invested in the outcome, but they do not direct the surrogate's medical care.
Before transfer, ask what instructions are written down, who confirms medication changes, and what happens if travel, illness, childcare, or work conflicts with a monitoring appointment. Clear instructions reduce avoidable stress during a time-sensitive cycle.
Questions to ask your clinic
- Which medications will I take and for how long?
- What side effects should I report?
- What happens if the transfer is delayed?
- When is the pregnancy test?
- When would I transition from the fertility clinic to my OB/GYN?
- What activity limits apply after transfer?
- Who do I call after hours?
Next steps
- Surrogacy process
- Surrogacy requirements
- What medications will I take as a surrogate?
- Start the surrogate application
This page is educational information only and is not medical advice. Follow the fertility clinic's medication, transfer, testing, and emergency instructions.