Sperm in vulva during ovulation

The vulva is one of the softest and most sensitive parts of the body and is the gateway for sperm to enter the body. As sperm pass through the urethra and anus, they suffer from a series of obstacles, such as strictures in the urethra and anal rings at the anus, which make it take longer for sperm to enter the vagina.

However, sperm have great vitality and adaptability, and they can survive these obstacles and stay in the vulva. This phenomenon is called "sperm swimming."

Sperm swim by moving forward and through the walls of the vagina and uterus, eventually reaching the fallopian tubes. This process requires the sperm to have sufficient speed and energy, and requires them to keep moving forward through a variety of mechanisms.

In the vulva, sperm needs to overcome various obstacles, such as the acidic environment of the vagina, friction between the vagina and uterus, and stenosis and obstruction of the uterus and fallopian tubes. At the same time, they also need to survive and progress through vaginal secretions and the cells and bacteria surrounding the vaginal opening.

The time that sperm stays in the vulva varies from person to person and depends on many factors, such as the woman's menstrual cycle, the number and speed of sperm, etc. Typically, the longer sperm remains in the vulva, the greater a woman's chance of becoming pregnant.

To sum up, having sperm on the vulva during ovulation is a challenging and mysterious process, but it's also a very exciting time. Through the ability of sperm to swim, we can predict which women are more likely to become pregnant and take action when they are at risk.