It depends on what Birth Control method you're referring to. If using hormonal birth control this stops fertile cervical mucus being produced, thus the sperm will not survive for long within the acidic environment of the vagina - a few hours to a few days at most. Obviously if you were using spermicide the sperm wouldn't survive more than around 30 minutes to an hour.
Birth control doesn't affect the sperm's life span. They can live about five days.
How long does male sperm live
how long can sperm live in a women's body
Taking birth control if you are already pregnant or it's been days/weeks since you had unprotected sex, will not kill sperm or baby. It WILL however potentially cause permanent birth defects in an unborn child you may be carrying. Birth control is to prevent you from ovulating (releasing an egg) if you were not taking it and got pregnant- starting to take it won't kill sperm that will have already died off or an egg that has already been fertilized. Birth control is for PREVENTING pregnancy, not terminating and EXISTING one.
Sperm can live inside of a female for up to five days after intercourse.
It should be the same amount of time as when NOT on birth control.
Female sperm, or eggs, can live for about 12-24 hours after ovulation, while male sperm can live for up to 5 days in a woman's reproductive tract.
they dont
how long does it take to get back on your normal cycle after stopping birth control
Sperm typically live for 72 hrs.
Stomach acid kills the sperm almost immediately.
Sperm dies almost immediately after hitting air