We get it. Details of blood can make everyone a little shy, so we thought it might be helpful to try to clear a few things up about menstruation.

Remember when we got the infamous talk about sex, hair, odor, and other bodily changes that signaled puberty is coming?

I was in middle school when the conversation turned to ladies and their menstrual cycles. Somehow, one of the boys in our group thought that women were always on their periods. As in, we bled forever. Yeah, no.

Here are eight myths people need to get straight — as in, forget.

First of all, it’s important to understand that a woman’s menstrual cycle is not the same as her period. The actual time that a woman bleeds is known as menstruation, but her menstrual cycle is the entire time from one period starting to the next.

Although it’s widely circulated that a woman’s menstrual cycle lasts 28 days, that’s only an average number.

Some women’s cycles are much longer, from 29 to 35 days, while others can be shorter. Situations like travel, weight fluctuation, emotions, and medication can all affect when a woman’s period occurs, too.

So, comments about how women are “always on their time of the month” aren’t appreciated.

Every period is like every woman — unique to the individual.

Learn the difference between spotting and periods.

The pain we get during a period is real. We’re not talking about headaches or bumping into sharp corners. Some of us have to take off work and curl up in bed, hoping the pinching cramps will subside because it’s that bad.

This condition even has a medical name: dysmenorrhea.

In fact, around 20 percent of women have dysmenorrhea that’s severe enough to interfere with their daily activities. This condition affects our ability to concentrate, makes us more anxious, and can make us downright unpleasant. It’s also not anything you’ve experienced before.

Try these home remedies for menstrual cramps.

There’s a very real physical change in a woman’s body during this time. In the days leading up to a woman’s period beginning — when she’s “PMSing” — her levels of estrogen plummet, while her levels of progesterone sharply increase.

Estrogen is linked to serotonin, the “happy hormone,” and progesterone is linked to the part of the brain associated with fear, anxiety, and depression. The effects of hormones on mood are complicated, and while progesterone may depress some emotions, it has a mood-balancing effect.

It may be tempting to write off seemingly drastic changes in moods as “just hormones,” but mood changes caused by hormones are still real. It may happen on a more monthly basis for us, but it doesn’t invalidate our feelings.

Speaking of hormones, women have been accused of being “hormonal” for a long time. Some men have even equated our feelings to hysteria, as if it’s an illness, to explain female behavior, but news flash: Everyone has hormones, and nobody likes them to be messed with. Even men.

Just take a look at this study on male contraception, which was discontinued because participants couldn’t handle contraception’s side effects of acne, injection pain, and emotional disorders.

Women accept these same side effects with their birth control, even if they negatively affect our overall well-being.

Period blood isn’t rejected body fluids or the body’s way of flushing out toxins. Think of it as evolved vaginal secretion — there’s a little bit of blood, uterine tissue, mucus lining, and bacteria.

But it doesn’t change whether or not we can have sex, and it doesn’t mean conditions are less than ideal down there.

Period blood is very different from blood that moves continuously through the veins. In fact, it’s less concentrated blood. It has fewer blood cells than ordinary blood.

Not every woman gets her period and not every female who gets a period considers themselves a woman. Transgender men and nonbinary people may get their periods, just as transgender women and nonbinary people might not have periods.

Menstruation isn’t always just a “woman’s” issue. It’s a human issue.

Periods are a humanitarian crisis. In 2014, the United Nations declared that menstrual hygiene was a public health issue.

Many people don’t have access to the proper hygiene, resources, and support they need for their periods. In India, girls miss school 1 to 2 days every month because of their periods, which can drastically affect their education and future.

If we stop thinking that periods are gross, shameful, and dirty, then perhaps it wouldn’t be a humanitarian crisis. But the truth is, we have a long history of embarrassment to overcome. It’s so ingrained in our behavior that being put on blast for having our period doesn’t help.

We shouldn’t have to feel like we need to whisper about needing a tampon or hide a tampon up our sleeve. Periods aren’t anything out of the ordinary, and neither is talking about them.

Let’s do our part to change this cycle and ditch the stigma. After all, periods and the balance of hormones are what help us stay young!

Seriously, periods are part of our body’s answer to slowing aging and even reduce our risks of cardiovascular disease.

Now read about seven things you need to know about periods.

Chaunie Brusie, BSN, is a registered nurse with experience in labor and delivery, critical care, and long-term care nursing. She lives in Michigan with her husband and four young children, and is the author of the book “Tiny Blue Lines.”