IS IT POSSIBLE FOR A WOMAN TO GET PREGNANT WHILE ALREADY PREGNANT?
The answer is YES!
It is a phenomenon known as superfetation–in which a new pregnancy occurs during an initial pregnancy within days or weeks after the first one, according to Healthline.
It is an extremely rare phenomenon that occurs when the body releases a second egg even though an embryo has already been implanted in the uterus. This second egg is then fertilized and implants, leading to a second, simultaneous pregnancy.
The result is two separate pregnancies happening at the same time. It's such a rare occurrence that medical experts have only been able to identify a few confirmed cases of superfetation in pregnant women this is because normally, a pregnant woman's ovaries temporarily stop releasing eggs(ovulation). So, while yes, you could get pregnant while you're already pregnant, it's probably not something to worry about.
To have a double pregnancy, you’d have to either ovulate while pregnant or have two uteri. Both of those scenarios, again, are highly unlikely.
Ovulating during pregnancy happens so infrequently that doctors haven’t been able to study why it may occur.
While uterine abnormalities aren’t quite as uncommon, doctors typically see people with a divided or partially formed uterus, not two separate uteri.
IS THERE A DIFFERENCE BETWEEN SUPERFETATION AND TWINNING?
Yes, although Superfetation might be mistaken for a twin pregnancy in an ultrasound because it also involves seeing two babies, it’s not the same thing.
Strictly speaking, twins are two offspring produced by the same pregnancy.
Twins can be either monozygotic (identical), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic (non-identical or fraternal), meaning that each twin develops from a separate egg and each egg is fertilized by its sperm cell. Since identical twins develop from one zygote, they will share the same gender, while fraternal twins may or may not.
In rare cases, twins can have the same mother and different fathers (heteropaternal superfecundation), while in the case of SUPERFETATION, one pregnancy is already in existence before another is added.
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