This is not an std, it is simply a blister or cyst on the labia. It is usually small, bebeish in size. The color is usually purple, as it is a blood blister. It could go away on its own, or you can pop it with great pain. Your choice. Snapping it yourself, however, can cause scarring.
It can be from irritation and friction from clothes or even a STI. If you think you might be at risk for a STI see a doctor.
The only time women would be missing one of their labia is if they have had it surgically removed. All cis-women have two inner labia and two outer labia.
It is not recommended for women who are pregnant to donate plasma or blood.
The rush of blood into the labia caused by sexual stimulation can cause the labia to turn a dark color. If the labia belong to someone of a dark complexion, ie African American, Indian, etc. the labia may become black with age. It should also be considered that caucasian women who have more than frequent sexual activity can develop a darker color in their labia from friction, stretching and oversized, prolonged penetration.
africian
Likely non-existent, as women are only pregnant for nine months.
It's when a woman is "turned on" that it becomes enlarged. More blood flow to the area causes the swelling. Arousal can enlarge a woman's inner AND outer (more common) labia. There is more. However, the questioner didn't ask why labia are enlarged during sex. Labia will get larger as a girl goes through puberty. A girl will appear to have no labia, or exceptionally small labia until puberty. Depending on genetics and nationality, women's inner labia have been measured at 1 inch, outer labia have been measured to be as long as three inches, unaroused. Also, it is accepted practice in many cultures for women to stretch their labia by attaching weights. This practice is becoming more common in western society. Devices are sold on the web for stretching labia. Oral sex can elongate labia, too, if the person sucks and stretches the labia regularly. In the U.S. a small number of women have their labia surgically reduced in size, but recent evidence suggests that more women and their partners prefer longer labia because of the sexual stimulation provided to the male and female. Some believe this is all part of an increased focus on females being more interested in sexual gratification during sex , i.e.; over 50% of women 40% of men from 18 to 45 report shaving all or most of their pubic hair to enhance sexual arousal, improved cleanliness and because of how bare genitals can enhance fore play and arousal..
yes
50%.
No, because donated blood may go to pregnant women.
Hematocrit is the proportion of blood volume that is occupied by red blood cells. For man it is normally about 46%, for women 38%. If a pregnant woman has an abnormally low volume of red blood cells, this may need further medical investigation and attention, as it may indicate internal bleeding or hemorrhage.
For most women yes. There are a few women who are pregnant with a negative blood and urine test. But very few.
Pregnant women do not produce white blood. They need more blood to meet the demand of pregnancy. They may become pale and look whitish. They need iron supplement in that case.