nothing
No. To get pregnant, there needs to be sperm and and egg. Eggs come from girls and sperm from boys.
it doesn't after it is in there it does not come out.
The semen has to come back out of the body since the body can not absorb it and the uterus is a dead end. The sperms are still swimming though so pregnancy can still happen if she ovulates. The semen is supposed to come back out. That's normal.
Actually, when boys go through Puberty they begin to produce sperm. It can happen at any point during this period of growing up.
They havent gone through puberty yet.
Masturbate. If you are a child it may not happen until you are older.
Don't worry it will come eventually. Puberty is a time period that your body uses to make changes from a child into an adult. It does not all happen at once. By the time you are 15 or 16 you will be able to ejaculate sperm.
Women do not produce sperm ! Women produce eggs - which are developed in their ovaries !
Sperm would come out of your mouth
Normally only one sperm fertilizes the egg and the others die. They are absorbed by the woman's body or expelled in the urine without any problems.
If sperm has not entered the womans body then sperm will not come in contact with the egg so no you will not get pregnant.
Nocturnal emissions or 'wet dreams' happen quite often and you are unaware of it.