And yet, there are still things about our own menstrual cycles that elude us.

So we tapped top experts to address some common period myths and misconceptions.

Let’s clear up some confusion, shall we?

Tampon with Googly Eyes Period Myths

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“That is cycle day one.”

(This video shows your entire menstrual cycle in two minutes.)

“You may not ovulate exactly on the 10th day every single month.

“That’s certainly something we want to treat,” says Sasan.

(The exception: If you’re adjusting your contraception to purposefully miss your periodmore on that below.)

Here’s some information onhow to know if you have PCOS, endometriosis, or boththat may be helpful.

But don’t panic thinking you’re going into full-blown menopause right away.

“Menopause is one full year without a period.”

And more young women are doing just that.

Half of these women said they delayed or skipped their period for convenience’s sake.

“Is it safe for you to not have your period [by choice]?

Absolutely,” says Millheiser.

“The progesterone in your birth control pills is keeping the uterine lining thin.

Often women will choose to have their periods two to three times per year.”

Keep in mind that if you do continuousbirth control pills, except some breakthrough bleeding eventually.

One of the most persistent period myths is that it’s impossible to get pregnant while you’re menstruating.

It’s not common, butgetting pregnant while on your periodcan definitely happen.

Sperm can last in the cervical mucous and uterus for up to five days.

The chances are slim, notes Millheiser, but is a possibility.

This is especially true if a woman’s cycle is short and her period lasts six or seven days.

Adds Sasan: “It’s very unlikely for a woman who is actively menstruating to get pregnant.

Another risk is thinking you’re on your period while you’re actually ovulating.

“It’s very common for a woman to spot during ovulation,” notes Millheiser.

It’s just hormonal changes during ovulationit causes this little shedding.

It’s nothing concerning.

The misconception can lead to a pregnancy outcome.

As almost anyone with a period knows, those contractions can be uncomfortable and even downright painful.

Over-the-counter pain relievers, as well as birth control pills, can help.

That way, the medication is already in your system.

“No one should put up with pain,” she says.

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