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The Frozen Embryo Transfer (FET) calendar is a carefully timed medication schedule designed to prepare your body for implantation and early pregnancy. Following it precisely is essential—each dose plays a role in supporting the uterine lining, hormone levels, and embryo transfer timing. If you’re ever unsure about a medication, dosage, or how to administer something, your case manager is always available to review your instructions, confirm the schedule, and guide you through the process.
Before you begin, take time to fully understand your FET calendar—know when and how each medication should be taken. To maintain accuracy and consistency in medication use, we ask our surrogates to follow these best practices:
Every surrogate’s medication plan is different. Your fertility doctor will customize your protocol based on your medical records and the clinic’s preferences. Not everyone will be prescribed the same medications or dosages.
Oral medications help regulate hormone levels and must be taken at the same time each day to be most effective. Here are some medications that are commonly prescribed during a typical FET cycle. Your own medication list may look different, depending on your doctor’s plan for you.
| Medication | Purpose |
|---|---|
| Estrogen (Estrace/Estradiol) | Helps thicken the uterine lining |
| Doxycycline | Prevents infection before transfer |
| Medrol (Methylprednisolone) | Lowers immune response to support implantation |
| Baby Aspirin | Improves blood flow to the uterus |
InInjectable medications are essential for preparing your body for embryo transfer and supporting early pregnancy.
| Medication | Purpose | Injection Type |
|---|---|---|
| Lupron (Leuprolide Acetate) | Prevents ovulation | Subcutaneous (stomach/thigh) |
| Estrogen (Delestrogen, Estradiol Valerate) | Thickens uterine lining | Intramuscular (buttock) |
| Progesterone in Oil (PIO) | Supports implantation & early pregnancy | Intramuscular (buttock) |
When it comes to injections, stick to a consistent schedule. Taking your injections at the same time each day helps maintain hormone balance. Rotating injection sites between different sides can reduce soreness and irritation. You can also warm the progesterone oil slightly before injecting to help it flow more easily, and use a warm or cold pack before or after the injection to reduce discomfort.
Some FET protocols include vaginal progesterone suppositories to support early pregnancy. Make sure to take them exactly as prescribed, usually two to three times per day. After inserting, try to stay reclined for a few minutes to help with absorption. Minor discharge is normal—wearing a panty liner may help. Staying well hydrated can help reduce cramping or discomfort.
Throughout your FET cycle, your clinic will schedule a few important check-ins to make sure everything is progressing as expected. These usually include ultrasounds and blood work to track hormone levels and check how your body is responding to the medications.
Here are the key appointments you can expect:
Whenever possible, try to schedule morning appointments—this helps the clinic get results back the same day and make any needed adjustments quickly.
GSHC U.S. Surrogacy & Egg Donation Agency is a highly recommended U.S.-based surrogacy and egg donation agency, led by Dr. Jia Shen, with over 10 years of professional experience. GSHC has helped welcome 800+ babies through ethically managed U.S. surrogacy and egg donation programs.
Recognized for rigorous surrogate screening, elite egg donor programs, and highly personalized intended parent care, GSHC brings deep expertise in complex, international, and LGBTQ+ surrogacy cases and is widely recommended by families worldwide.
📩 Contact us now to learn more about becoming a surrogate mother and making a life-changing difference for intended parents!
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