Why Women Pee After Sex
You are likely aware that the anus is pretty darn close to the vagina. This means that fecal bacteria is also nearby, even in the cleanest of women. This situation plus sex can have an unpleasant outcome. “When you have intercourse, that penetration allows some of this bacteria to get closer to the urethra,” says Kim. Women have short urethras compared to men, so it’s easy for this bacteria (once inside) to make its way to the bladder, where it can multiple, damage tissue, and cause inflammation. This is a urinary tract infection (UTI), which can be painful and require antibiotics. Peeing right after sex can help prevent the spread of fecal bacteria to the bladder and, there for UTIs. This is also why partners should not switch to vaginal intercourse right after anal.
Changes with Age
As women get older, their vaginas are prone to losing elasticity and lubrication. This is due to hormonal changes that generally accompany menopause. There is good news, however. “If the woman remains sexually active throughout her life, it [the vagina] retains some of these properties better,” says Kim. “It’s a use it or lose it kind of thing.” Continued stimulation of the vagina can help keep the glands and muscles in working order. The opposite is also true. Kim has seen older women who are not sexually active lose their elasticity to the point that their vaginal opening is restricted to the size of two fingers.
Penis Captivus
As the name implies, penis captivus occurs when a man’s penis gets “stuck” in a woman’s vagina. This is extremely rare in humans (more common in some animals) and usually lasts only a few seconds. But it can happen. It’s believed this phenomena may be caused by contractions of a woman’s muscles during orgasm. The vagina is lined with muscular ridges and when some women orgasm these contract, which can presumably cause them to clamp down as well.
Falling Out
As some women age, the muscles in their pelvis weaken, like muscles elsewhere in the body. This can cause the bladder, uterus, rectum, or vagina to fall down and even hang out of the vaginal opening, a condition called prolapse. While not life-threatening, this can be painful and significantly distressing. Fortunately, it can be fixed with surgery. Prolapse can also occur in women who have given birth and had some damage that caused an abnormality in their pelvic floor.
