Why do chemical pregnancies happen with IVF?

A pregnancy loss that happens before the fifth week is referred to as a chemical pregnancy. Chemical pregnancy may be indicated by a positive pregnancy test result followed by a negative result a few weeks later. The majority of women who encounter them go on to have healthy pregnancies.

What is a chemical pregnancy?

A very early miscarriage that happens in the first five weeks of pregnancy is known as a chemical pregnancy. An embryo develops, and even implants in the lining of your uterus (implantation), but then stops growing. Because chemical pregnancies occur so early, many women who miscarry are unaware of it. 

If you’re trying so hard to get pregnant, the losses from artificial pregnancy can sometimes be terrible. However, having a chemical pregnancy doesn’t necessarily preclude you from being able to have children. Early miscarriages are common, but many women go on to have healthy pregnancies. (1)

What can cause a chemical pregnancy?

The embryo in a chemical pregnancy releases hCG, a hormone it requires for growth. Pregnancy tests use this hormone to determine whether a woman is pregnant. An embryo stops producing hCG when it stops growing. 

The exact reason why embryo development stops during a chemical pregnancy is unknown. The embryo stops growing presumably as a result of a genetic or DNA abnormality. A developing embryo may occasionally fail to properly implant or connect to the uterine lining. Your hCG levels decrease as a result, and pregnancy tests are negative. (2)

A chemical pregnancy can occur for a variety of reasons. Here are some causes of chemical pregnancy.

  • Genetic abnormalities in the embryo which is a very common cause
  • High blood sugar levels in diabetic women
  • The thin uterine lining as the embryo cannot implant (3)

Who do chemical pregnancies affect?

A chemical pregnancy can happen to anyone who is capable of getting pregnant. If you’re attempting to get pregnant through in vitro fertilization (IVF treatment in Turkey), you could be more likely to spot a chemical pregnancy because these pregnancies are monitored so carefully. However, IVF by itself is not a risk factor for a chemical pregnancy. 

Your likelihood of having an early miscarriage rises if:

  • You are 35 years of age or older. 
  • Your uterus is unusually shaped. 
  • You have an imbalance in your hormone levels. 
  • You have a sexually transmitted infection (STI). 
  • You suffer from polycystic ovarian syndrome (PCOS), diabetes, or thyroid problems. 

You discuss with your doctor any possible risk factors. You can develop a care plan together to address any underlying problems that might be impairing your fertility. (4)

What symptoms and signs are observed in a chemical pregnancy? 

Knowing the typical symptoms of a chemical pregnancy can be useful for early diagnosis and treatment. 

  • If you experience a week-later period than usual, 
  • If the results of your pregnancy test are positive and then you start getting your period,
  • If you get a negative result a few weeks after a positive pregnancy test, 
  • If you are experiencing heavier-than-normal bleeding and more severe cramping, 
  • If you took a pregnancy test and it came back positive, but you don’t have the typical early pregnancy symptoms, 

These may be symptoms and signs of chemical pregnancy. Without employing a pregnancy test, it is impossible to determine whether you had a chemical pregnancy (using a urine or blood test). (5)

How can chemical pregnancy be avoided? 

A chemical pregnancy cannot be stopped. The majority of chemical pregnancies occur when the embryo’s DNA has a flaw that stops it from growing. The next embryo and those that come after it have a good chance of developing normally.

Sources: 

1- https://my.clevelandclinic.org/health/diseases/22188-chemical-pregnancy

2- https://my.clevelandclinic.org/health/diseases/22188-chemical-pregnancy

3- https://carefertility.com.au/resources/blog/what-is-a-chemical-pregnancy

4- https://my.clevelandclinic.org/health/diseases/22188-chemical-pregnancy

5- https://my.clevelandclinic.org/health/diseases/22188-chemical-pregnancy

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