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Superfetation (also spelled superfoetation – see fetus) is the simultaneous occurrence of more than one stage of developing offspring in the same animal. [1] [2] [3]In mammals, it manifests as the formation of an embryo from a subsequent menstrual cycle, while another embryo or fetus is already present in the uterus.
Ovulation is normally suspended during pregnancy to prevent further ova becoming fertilized and to help increase the chances of a full-term pregnancy. However, if an ovum is atypically released after the female was already impregnated when previously ovulating, a chance of a second pregnancy occurs, albeit at a different stage of development.
Some moms have conceived again days or a few weeks after becoming pregnant the first time. ... According to triplet mom Fletcher, she menstruated two or three times a month. But because ...
Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...
OB-GYNs weigh in on the many reasons why you might be getting two periods in one month, and how to deal with this unfortunate occurrence.
A woman from Hunan, China, was pregnant for a record-breaking 17 months, according to People's Daily Online; she reportedly got pregnant in February 2015 and hadn't given birth by mid-August this ...
Signs and symptoms of pregnancy are common, benign conditions that result from the changes to the body that occur during pregnancy. Signs and symptoms of pregnancy typically change as pregnancy progresses, although several symptoms may be present throughout. Depending on severity, common symptoms in pregnancy can develop into complications ...
“I have been pregnant twice, hospitalized both times,” Clarkson, 41, shared on The Kelly Clarkson Show on Monday, April 15, while talking with guest Hillary Clinton about the Arizona Supreme ...