What is the average life of sperm after ejaculation outside the body?
Sperm exposed to room air on clothing, bed linens or toilet seats lose motility (the ability to swim) rapidly. Once the semen dries out, the sperms are usually dead.If the semen is near the woman and no fertile fluid is present, they will die within a few hours outside the body. If semen is spilled on the external genitals (not in the vagina) they can swim to enter the vagina. Thus they travel from outside the body to inside.
Inside the body sperms can survive for 72 hours or more. Half of them perish in 1 to 5 hours journey inside. Note that this half is more than 60 million sperms.
That said, you should take basic caution after sex that you’ve cleaned up any semen on or around your partner & yourself.
Important to know
Women are fertile for about 24–48 hours around the time of ovulation (before and after ovulation) and in most ideal conditions (ideal vaginal/uterine environments, fertile eggs, strong sperm health, etc) – sperm may be able to survive between six and seven days.Is it safe to have sex 3–5 days before and after your period?
No, it isn’t safe, you can ovulate anytime during the month. All women are different. You get pregnant during ovulation. Always use protection.If you want to determine when you are fertile, there are currently two major methods used to determine when a particular woman is ovulating. Basal body temperature is one method. The basal body temperature (BBT) will fall abruptly one to two days prior to ovulation in most women. There is a basal body thermometer used to measure basal body temperature. The temperature of a healthy person when taken immediately upon awakening is considered to be the BBT. Basal conditions are defined as being found 12 hours after the following: a restful sleep, eating, with no exercise, and with no emotional excitement. Also, basal body temperatures should be taken in normal ambient temperature. In addition to the drop in BBT prior to ovulation, other symptoms of fertility are monitored. These symptoms include cervical mucus changes and general physical observations. Basal body temperature monitoring may be a useful approach initially for a couple attempting to conceive. It is an inexpensive option which also provides a woman with accurate data concerning her cycle length. This information is helpful when considering the purchase and use of in-home monoclonal antibody ovulation prediction kits.