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Surrogates: requirements

Can you be a surrogate while breastfeeding?

The short answer

You can apply while breastfeeding, but you must wean before starting fertility medications. Private Label Surrogacy accepts applications from nursing mothers and begins screening, matching and legal work while you finish breastfeeding; most partner clinics require that you have fully weaned and had at least one to three regular menstrual cycles before a mock cycle or transfer. Prolactin, the hormone that drives milk production, suppresses ovulation and the uterine lining, and the estrogen and progesterone used to prepare for transfer pass into breast milk. Since screening and matching usually take several months, many surrogates wean naturally during that window. Tell us your weaning plan at prescreen so your case manager can time the medical screening.

Written by Julie Bendix, MPH, RD, LD, CLC

Registered dietitian and lactation counselor. At least six nutrition consults with every surrogate.

Medically reviewed by Mark Silverberg, MD

Last updated

Can you apply while still nursing?

Yes. Private Label Surrogacy accepts applications from mothers who are still breastfeeding. You do not have to wean before you apply. You have to wean before you start fertility medications.

That gap is useful. Screening, matching and legal work can all run while you finish nursing:

Only after all of that does the clinic start your medical cycle. Many surrogates wean naturally during that window, on their own schedule and their baby's, without rushing it.

Breastfeeding does not affect matching. Matching can proceed while you nurse. Only the medical cycle waits for weaning.

Why clinics require weaning before medications

Two reasons, one about your body and one about your baby.

Prolactin. Prolactin is the hormone that drives milk production. While it is high, it suppresses ovulation and keeps the lining of the uterus from building up the way it does in a regular cycle. That is why many nursing mothers do not get a period for months. A clinic preparing you for an embryo transfer needs your lining to respond predictably to medication, and high prolactin gets in the way.

Medications in breast milk. To prepare for transfer, you take estrogen and progesterone, usually as pills, patches, injections or suppositories. These hormones pass into breast milk. Clinics do not give them to a nursing mother, so the medical cycle starts after you have stopped.

There is also the practical side. A transfer cycle has a precise schedule, and a pregnancy that follows asks a lot of your body. Starting it after you have weaned lets you give it, and your own baby, your full attention. See surrogate medications for what the protocol involves.

How many cycles after weaning before transfer?

Most partner clinics require that you have fully weaned and had at least one to three regular menstrual cycles before a mock cycle or transfer. Some require three months fully weaned. The clinic that will do your transfer sets the exact rule.

The regular cycles matter because they show your hormones have settled after nursing. A period that returns on a predictable schedule tells the clinic your body is ready to respond to the transfer medications.

Stage What PLS allows What the clinic allows
Still nursing Prescreen, screening, matching and legal work No fertility medications, mock cycle or transfer
Weaned 0 to 1 month Everything above continues Usually waiting for regular cycles to return
Weaned, with 1 to 3 regular cycles Everything above continues Most clinics allow a mock cycle or transfer once their cycle count is met
Weaned 3 months or more Everything above continues Meets the stricter clinic rule; medical cycle can start

How PLS times screening around your weaning plan

Tell PLS your weaning plan at prescreen. A plan can be as simple as "my son is 9 months old and I expect to wean by 12 months." Your case manager uses it to time your medical screening, so the clinic sees you after you have weaned, not before.

Your case manager also works backward from the clinic's rule. If your matched clinic wants three cycles after weaning, the medical calendar is built around that. If you wean sooner or later than planned, tell your case manager and the schedule moves with you.

Weaning is also a recovery step. If your baby is young, read how soon after giving birth you can be a surrogate, because clinics also require a minimum interval between your delivery and a transfer.

Julie Bendix, MPH, RD, LD, CLC, is a registered dietitian and lactation counselor, and she meets with every PLS surrogate at least six times across the journey.

Can you pump for the intended parents' baby after delivery?

Yes, if you and the intended parents agree. Some intended parents ask for breast milk for their newborn, and some surrogates are glad to provide it. Neither side is obliged. You agree on it in advance, and the agreement records it.

PLS contracts pay $200 per week for pumping. Pumping takes time every few hours, so decide realistically how long you can sustain it alongside your own family. You can agree on a set number of weeks and stop when you reach it. See postpartum pumping for how it works after delivery.

If you are nursing now and meet the other surrogate requirements, you do not need to wait to apply. Start at See if I qualify and note your weaning plan on the form.

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Frequently asked questions

How long after weaning can you be a surrogate?

Typically after one to three regular cycles; the clinic sets the exact requirement.

Can you pump milk for the baby you carry?

Yes, if you and the intended parents agree. PLS contracts pay $200 per week for pumping.

Does breastfeeding affect matching?

No. Matching can proceed; only the medical cycle waits for weaning.