Increasing the Chances of a Second Pregnancy: US and Mexico IVF Doctors' Time Management Methods

2025-08-15 18:11:39，visits： 37

 

After the second-child policy was liberalized, more and more women began planning for another pregnancy. However, the interval between the first and second pregnancies is not only related to maternal and infant health but also affects the success rate of pregnancy. This is especially important when considering assisted reproductive options such as US and Mexico IVF and US and Mexico egg freezing.

 

Multiple large-scale studies from the US and Canada have shown that if the interval between pregnancies is too short, especially less than 18 months, the risks of premature birth, low birth weight, and infant health problems significantly increase. For women over 35, getting pregnant within 6 months after childbirth poses an even greater risk to the health of both mother and baby. Extending the interval to more than 18 months can significantly reduce the probability of potential complications. Even for younger women, a too-short interval increases pregnancy risks, so the medical community generally recommends an interval of at least one and a half years between pregnancies.

 

Why is the interval so important? Research from Harvard University points out that after childbirth, a woman's uterine lining, hormone levels, and overall physical condition need time to recover. Getting pregnant again too soon may mean that the internal environment has not returned to its optimal state, thereby affecting embryonic development. Furthermore, getting pregnant too early after childbirth is often accompanied by insufficient prenatal check-ups, which also increases pregnancy risks.

 

In the actual pregnancy preparation process, many women find that getting pregnant with a second child is more difficult than with the first, which is closely related to increasing age and declining ovarian function. Dr. Nathan Zhang reminds us that the quality and quantity of eggs begin to decline after age 30, and the rate accelerates after age 35. Advanced maternal age not only reduces the chance of pregnancy but also increases the risk of embryonic chromosomal abnormalities. Studies show that the rate of embryonic chromosomal abnormalities in women over 40 can be as high as 60%-70%, which is one of the main reasons for infertility and miscarriage in older women.

 

For women of advanced maternal age or with declining ovarian function, IVF-PGT technology offers new hope. By performing genetic screening on blastocysts to ensure that the transferred embryos are healthy, this technology can not only increase the success rate of transfer but also effectively reduce the risk of failure caused by chromosomal abnormalities.

 

Before making the decision to prepare for pregnancy or undergo IVF, it is especially important to scientifically plan the timing and reasonably assess your physical condition. Dr. Nathan Zhang's IVF USA team, which he founded, has been providing overseas assisted reproductive consulting services for over a decade, offering US egg freezing, US IVF, and third-party assisted reproductive services to those in need. With nearly 20 years of deep expertise in the overseas assisted reproductive field, IVF USA, driven by diverse and personalized reproductive needs, strategically expanded into the Mexican market early on, becoming the authorized agent for Power Fertility Center Mexico (POWER IVF) in China. Dr. Nathan Zhang's services currently extend beyond the US to include IVF and egg freezing in Mexico, Japan, and Thailand, as well as Taiwan and Hong Kong. For every family with a fertility plan, they create more scientific plans based on individual circumstances, making every step of pregnancy preparation and IVF more stable and certain.