The embryo transfer procedure is the final step in the in vitro fertilization (IVF) process, involving the placement of a fertilized egg into the uterus. Following this, the “two-week wait” begins, lasting until a pregnancy test can confirm the outcome. During this sensitive time, specific precautions are taken to avoid external factors that could interfere with implantation. While success depends largely on the embryo’s quality and the state of the uterus, avoiding certain activities and substances helps support the body during this phase.
Physical Activities and Strain to Avoid
Following the transfer, the primary concern is limiting physical activity that causes undue strain. This restriction promotes a calm internal environment and maintains steady blood flow to the uterus. Strenuous exercises, such as high-impact activities like running, jumping, or intense aerobics, should be avoided during the two-week wait. Activities involving heavy weight lifting or intense core work, like crunches, are also discouraged, as they may increase intra-abdominal pressure.
Patients should avoid carrying anything heavier than approximately 10 pounds (roughly the weight of a gallon of milk). This limitation prevents excessive straining that could disrupt the early stages of implantation. While limiting strenuous activity is important, complete bed rest should be avoided, as it increases the risk of blood clots.
Gentle movement, such as light walking, is encouraged to maintain healthy circulation. This helps prevent blood stagnation without stressing the pelvic area. The goal is to balance resting the body from intense exertion with maintaining normal, low-impact daily routines.
Lifestyle and Environmental Hazards
External factors and habits that alter core body temperature or introduce toxins should be avoided. Exposure to extreme heat is restricted, meaning activities like using saunas, hot tubs, or taking very hot baths are prohibited. An elevated core body temperature, generally above 100.4°F (38°C), may negatively affect the uterine environment and interfere with implantation.
Most specialists recommend abstaining from sexual intercourse during the two-week wait. Uterine contractions associated with orgasm may impair the embryo’s ability to settle into the lining. Avoiding penetration also minimizes the risk of infection or local irritation in the pelvic area.
Contact with certain environmental toxins should be minimized. Harsh household cleaning chemicals, strong paint fumes, and heavy-duty pesticides should be avoided or delegated. These substances may contain compounds that act as endocrine disruptors or place unnecessary stress on the body. Opt for natural or fragrance-free alternatives when possible.
Dietary Restrictions and Medication Cautions
Strict avoidance of alcohol and nicotine is necessary throughout the two-week wait and beyond. Both substances negatively impact early embryonic development. Nicotine, specifically, reduces blood flow to the uterus, which hinders establishing a healthy environment for implantation.
Caffeine intake should be carefully limited to support hormonal balance. While complete abstinence is sometimes recommended, many clinics advise restricting intake to less than 200 milligrams per day (one standard cup of coffee). Excessive caffeine consumption may affect blood flow and is associated with reduced IVF success rates.
Dietary precautions include avoiding foods that carry a risk of bacterial contamination or high levels of mercury. This means excluding unpasteurized dairy products, raw or undercooked meats and fish, and high-mercury fish like swordfish or shark. Foodborne illnesses, such as those caused by Listeria, pose a significant risk and must be avoided.
When addressing pain, certain over-the-counter medications must be avoided unless directed by a healthcare provider. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen (Advil, Motrin), are restricted due to their potential to interfere with implantation. Acetaminophen (Tylenol) is typically considered the safer alternative for pain relief. Individuals should not introduce any new herbal supplements or medications without first consulting their fertility specialist.