What Your Period Blood Can Tell You About Your Fertility

Chances are if you’ve ever compared your period with that of your friend, you’ve found some pretty big differences. Whether it be duration, flow, cramp severity, or mood changes, you may find that your period doesn’t resemble your friend’s in any way!

Here’s what the average period should look like according to MindBodyGreen:

  1. You should have a regular cycle consisting of 4-6 days of bleeding with 28-35 days in between each period of bleeding.
  2. Your period should come along with minimal premenstrual cramping, slight breast tenderness, and a small amount of moodiness.
  3. Your flow should be heavier on days 1 and 2 of your cycle before tapering off on the last few days.
  4. The bleeding should not be overwhelming, meaning you should be able to get by without changing your tampon for at least a couple of hours without leaking.
  5. The expelled blood in your period should be a bright garnet red color, not dark or light pink.
  6. Clots are normal as long as they are small, dime-size clumps and not larger, quarter-size clumps.

Any irregularity should be noted for at least three months before becoming problematic. After three months of any irregularities in any of these should be brought to your doctor.


What It Can Mean If Your Period Seems Off 


Light Bleeding

If your periods start off light and stay light, you might think you’re just one of the lucky ones but your uterine lining may not be thick enough. The lining of the uterus needs to be thick in order for the fetus to attach. Things like age, hormones, birth control pills, and stress may cause the flow of your period to change so, it’s best to consult with your doctor if you are experiencing a lighter flow than usual.


Heavy Bleeding

It is common to have heavier flow days, especially toward the beginning of your cycle but if you’re having consistently heavy periods that aren’t confined to the first few days of your cycle, it could be a sign of hormone problems, growths in the uterus, or certain female cancers.



Some clotting is normal throughout your cycle. However, when the clots are constant and larger than dime size, it could be cause for concern. Something could be blocking the flow from the uterus such as polyps, causing the clotting. Clotting can also be a sign of endometriosis.



Menstrual cramps are a regular experience. Stagnant blood is stuck inside the uterus so, your uterus uses cramps to shake the blood loose. If those cramps get to be unbearable, it may be a sign of a condition like endometriosis, pelvic inflammatory disease, or a narrowing of the cervix.


While an isolated occurrence of one of these symptoms isn’t a cause for concern, prolonged experience could be an indicator of something more serious. If you’ve experienced an abnormal period for more than three months, it should be brought to the attention of your doctor.

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