It doesn't really matter. The healthy male releases around 500,000,000 sperm cells each ejaculation. All it takes is one of those to make her pregnant.
Pre-cum is a colloquial or slang expression. The fluid is known as pre-ejaculatory fluid, pre-seminal fluid, or Cowper's fluid. It is not required to effect pregnancy. Semen contains sperm. Pregnancy happens when a males sperm fertilizes a females egg.
No, semen is just the transporter fluid, it's the sperm that gets you pregnant.
One sperm cell
* Preseminal fluid is precum and does contain sperm. There is a 2% risk of becomming pregnant.
No, women cannot get pregnant from another woman's vaginal fluid. Pregnancy can occur when sperm fertilizes an egg, and this typically requires semen from a male partner.
Sperm can make a person pregnant but is not exactly like water. Sperm is contained in seminal fluid that carries the sperm into the vaginal canal. A person can become pregnant when the sperm enters the female reproductive system.
No; sperm is required to touch the vagina in order for pregnancy to be a possibility.
Yes. If there was any fluid from him it could contain sperm
If you have sex once, a woman can get pregnant. If you didn't want to be, hopefully you used contraceptives.
You need sperm to make one pregnant, not penetration... One can get preganat from sperm without being penetrated, or won't get pregnant from penetration if there's no sperm. Fertility depends on male and female fertility, which is general health plus the fertility cycle of the female.
Not directly, but fluid from Cowper's gland is usually released along with the other ejaculate, so it would be difficult to separate the fluid from this gland and not get sperm from the testes.
Pre-ejaculate does contain sperm, and a woman can become pregnant at any time during her menstrual cycle.