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Any vaginal blood in early teen years is most likely menstruation. To understand the colors you'll see in a period, you need to understand what your body does each month. About 10 days before an egg is released, hormones tell your uterus to begin adding tissue to the walls of the uterus. This tissue has a big blood supply through many small blood vessels. This process thickens the walls of the uterus. If an egg is fertilized, the egg heads to the wall where it implants (attaches). There the egg will begin splitting, etc. But when an egg is not fertilized, the body does not need that thickened wall. This means the uterus needs to shed that thickened tissue. This process produces bleeding.

Everyone knows what it is like to cut a finger. You see brighter red blood then it stops. But the uterine lining is sliding off in the uterus. It takes a little while to come down through the cervix and vagina. When blood is NOT from a fresh new wound, the blood looks darker, a brownish to almost blackish color. So a period might start as a pinkish swipe of blood, then the next time you check, the blood that's coming is a little darker. You might see purplish-red chunks that are called clots--this is normal, too.


Most girls bleed 4 to 7 days. Each day, the color of the blood looks darker because it is "old" blood (not like a fresh cut on your finger). So by the end, the discharge has become less, but almost a yukky brown to blackish color. Just like on the first day, the amount may only be a swipe of blood. You may even think your period is over, but then, have one last time of a small amount of brownish blood. When you're seeing mostly brown (by the end of the period), you also know you're almost done with that period.



NOTE: If you ever have very bright red blood coming from the vagina or bright red that is heavy and doesn't seem to slow down, that would be cause for concern. If you are sexually active, you might have been cut from a jagged fingernail. You could also have something else going on that needs checked. It's important to get to know how your period blood looks and to understand it is NOT "fresh" bleeding, so you can tell the difference between a fresh injury versus a period.


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9y ago
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9y ago

Girl getting their period often experience dark, but light bleeding at first since the period blood has been stored for a while and never released before.

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Q: My friends and I all have our periods early We think it's a period But they're black and very light Why?
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