When a woman is pregnant however, a mucus plug is formed in the cervix, blocking the passage of sperm.
This mechanism prevents semen from passing through the pregnant uterus, let alone allowing it to reach the oviduct.
And for superfetation to occur, the conceptus needs to implant in a pregnant uterus.
What happens to sperm when you are already pregnant?
In extremely rare cases, a woman can get pregnant while already pregnant. Normally, a pregnant woman’s ovaries temporarily stop releasing eggs. But in a rare phenomenon called superfetation, another egg is released, gets fertilized with sperm, and attaches to the wall of the uterus, resulting in two babies.
Is sperm good for the baby during pregnancy?
The Surprising Benefits of Sperm During Pregnancy. Experts believe sperm might be able to prevent preeclampsia and cure morning sickness. You might know some of the advantages of pregnancy sex: lowered blood pressure, improved sleep, increased intimacy with your partner.
Where does sperm go when already pregnant?
Some of it, however, remains in the back of the vagina (in the posterior fornix) and an even smaller amount makes its way up through the cervix, into the uterus and down the fallopian tubes. It is here, in the fallopian tubes, that the sperm and egg meet.