Can you really get pregnant when you are pregnant?
By Livia Gamble
January 20 2019
Can you really get pregnant when you are already pregnant?
The short answer is: yes. The phenomenon is known as 'superfetation''.
As Time explains, the phenomenon occurs when a woman continues to ovulate after becoming pregnant. This allows a second egg to fertilise and implant itself in the the womb.
"Typically, hormonal changes prevent further ovulation and thicken the lining of the uterus to preclude a second embryo from attaching," said experts in the article.
But before you panic, it’s very rare.
A French report of one apparent case, published in 2008 in The European Journal of Obstetrics & Gynecology and Reproductive Biology, said each fetus had a separate amniotic sac and the difference is size was obvious throughout the pregnancy.
Technically, the babies were not twins because they were not conceived at the same.
The report added that there were fewer than ten cases known.
The most recent of the cases was in 2006 when two children were conceived separately, two weeks apart. They were born healthy via C-section.