This phenomenon is called "superfetation."
Having a baby is a wonderful and joyous experience. Learn about the science of pregnancy: how to get pregnant, the stages of pregnancy, what happens to the mother-to-be's body and how the fetus develops.
Reference A Caesarean section is a type of surgery used to deliver a baby through an incision in the mother's abdomen.
Reference In the third week of pregnancy, there won't be any major outward changes in a woman's body, but some pregnancy symptoms may have started.
Reference There are several things a man can do to increase the chances that he will get a woman pregnant.
Reference Every labor story is different, but there are definitely signs that can let you know if you are in the early stages of labor.
REFERENCE How should you sleep during pregnancy? Here’s the low-down on keeping your nights healthy and safe.
COVID-19 may increase the risk of giving birth prematurely, according to the largest study to date on this link.
Pregnancy lasts about 40 weeks and is divided into three stages, or trimesters, each with unique symptoms and changes in the mother's body and in fetal development.
A woman can deliver her baby either by vaginal birth or a C-section. Here are the advantages and disadvantages of both.
A newborn in London has tested positive for the novel coronavirus SARS-CoV-2, causing COVID-19, just minutes after being born to a mother who was also infected with the virus.
Swamp wallaby females can spend all of their adult lives in a permanent state of pregnancy, conceiving a new embryo while still carrying a near-term fetus.
For couples undergoing fertility treatments, marijuana use was linked with improved fertility outcomes when just the male partner smoked.