The surrogate mother is under the control of the doctor gynecologist-reproducer at least before one month of transferring the embryo and after confirming the pregnancy – during 12 weeks. It seems that the surrogate mother endlessly takes medicine and vitamins and naturally, feeling of certain calmness arises, when the surrogate mother ends taking medicine. It is done in case, when the doctor gynecologist-reproducers consider that the surrogate mother’s body is able to independently keep the pregnancy without medical intervention. This is genuinely a good feeling for any intended parent.
When the doctor gynecologist-reproducer stops prescribing medicine to the surrogate mother based on a number of factors, the intended parent shall understand that it does not happen with all surrogate mothers at the same time. Sometimes the same surrogate mother has not the same period during different transfers or pregnancies which have been carried out with the same doctor and the intended parents. The discontinuation of the medication is more defined by the fact, how the surrogate mother’s body reacts to the medicine and the pregnancy than by the calendar dates.
The embryologist can create an embryo through the IVF out of the body, then the doctor gynecologist-reproducer transfers it to the surrogate mother’s womb. It is necessary to create through medical intervention such conditions that it will be the womb of a woman fertilized right like in natural way. It takes place mainly through hormonal therapy.
They prescribe estrogen and progesterone to the surrogate mother for helping this process. While the estrogen helps the womb to be rich in blood and be with thick muscular membrane, the progesterone directs the body to create a placenta and preserve the pregnancy, before the formed placenta will be able to be fixed.
The IVF fertilization of egg and its implantation to the wall of the womb/uterus direct the body to produce, increase and preserve those hormones. But as the fertilization and first several days of the embryo life take place out of the body through the IVF formed during the pregnancies, the doctor gynecologist-reproducer shall manipulate the body for artificially creating those hormones. The pregnancy cannot be viable without appropriate level of those hormones.
The doctor gynecologist-reproducer checks the level of the surrogate mother’s hormone until the 12th week of the pregnancy every week aiming to clarify those levels, which cannot be sufficiently high to allow the body of the surrogate mother to preserve the IVF pregnancy at early stages. In the first quarter, at some moment, usually until the 12th week, the surrogate mother’s body starts to produce these two hormones, and she is allowed to slowly refuse the artificial hormonal therapy.
Doctors tend to be cautious about stopping a surrogate's medication, and different doctors use different protocols to determine when the surrogate's body is able to sustain a pregnancy on its own. The reason partially is that there is a big difference in the dates of starting the surrogate mothers’ menstruation cycles, and even in the same surrogate mother there are cases with different dates of onset of the menstrual cycle.