The Australian woman's first conception was natural and the second was through in vitro fertilization.
This is reported by the Dr. Evin website.
And it's a coincidence: the woman didn't think she would get pregnant because her husband was suffering from testicular cancer, so she went for IVF. Doctors later discovered a seven to eight week old fetus in her uterus, as well as another embryo 18 days younger than the first. This condition of "double pregnancy" is called superfetation, and there are only ten such cases recorded in the world.
It is also advisable to learn that Russian women put off pregnancy until later.
