You may be no stranger to premenstrual syndrome (PMS): Over 90 percent of women report experiencing some of the cumbersome symptoms that appear before their period, including bloating, cramping, fatigue, headaches, and moodiness, according to the Office on Women's Health.

Beyond these PMS symptoms, some women also say they feel flu-ish, a term colloquially dubbed the "period flu." While it's not an official diagnosis, here's what might be going on—and how you can feel well.

After ovulation, which occurs when the ovary releases an egg, levels of the hormones estrogen and progesterone begin to drop. As you get your period, prostaglandins are released.

These hormones help your uterine lining shed and cause cramps. "Prostaglandins are one of the reasons women suffer from painful periods," says Christine Greves, MD, a board-certified ob-gyn at Winne Palmer Hospital for Women & Babies in Orlando, Florida.

More in category

Astra-Oxford Vaccine Stays Near Front of Line Despite U.S. Delay
October 26, 2020MSN
Astra-Oxford Vaccine Stays Near Front of Line Despite U.S. Delay
India Daily Cases Slow; H.K. May Compel Some Tests: Virus Update
October 26, 2020MSN
India Daily Cases Slow; H.K. May Compel Some Tests: Virus Update
H.K. May Compel Some Tests; Lilly U.S. Trial Ends: Virus Update
October 26, 2020MSN
H.K. May Compel Some Tests; Lilly U.S. Trial Ends: Virus Update
Voters Say Coronavirus Response is Donald Trump's Greatest Failure: Poll
October 26, 2020MSN
Voters Say Coronavirus Response is Donald Trump's Greatest Failure: Poll
Antibody Defense Against Covid Wanes Over Time, Study Suggests
October 26, 2020MSN
Antibody Defense Against Covid Wanes Over Time, Study Suggests
Jacob Elordi shows off muscular legs in shorts while grabbing a juice
October 26, 2020MSN
Jacob Elordi shows off muscular legs in shorts while grabbing a juice
The New 'Terrifying' Nightly Problem COVID Survivors Experience
October 26, 2020MSN
The New 'Terrifying' Nightly Problem COVID Survivors Experience
Listeria outbreak linked to Italian-style deli meats kills 1, hospitalizes 9 across 3 states, CDC says
October 26, 2020MSN
Listeria outbreak linked to Italian-style deli meats kills 1, hospitalizes 9 across 3 states, CDC says
More Americans are being infected with the coronavirus than at any time during the pandemic, but people are too tired to care
October 26, 2020MSN
More Americans are being infected with the coronavirus than at any time during the pandemic, but people are too tired to care
Sharon Osbourne Is '10 Lbs. Over' What She Usually Weighs After Gaining Weight While Social Distancing
October 26, 2020MSN
Sharon Osbourne Is '10 Lbs. Over' What She Usually Weighs After Gaining Weight While Social Distancing
U.S. Trial of Lilly Drug Ends; Defense May Wane: Virus Update
October 26, 2020MSN
U.S. Trial of Lilly Drug Ends; Defense May Wane: Virus Update
COVID-19 Taking a Toll on Med Students, Survey Shows
October 26, 2020Medscape
COVID-19 Taking a Toll on Med Students, Survey Shows
Parents in a Utah school district say there's a 'mom code' in which mothers are urging others against testing their children tested for COVID-19
October 26, 2020MSN
Parents in a Utah school district say there's a 'mom code' in which mothers are urging others against testing their children tested for COVID-19
U.S. Trial of Lilly Drug Ends; Czechs Order Curfew: Virus Update
October 26, 2020MSN
U.S. Trial of Lilly Drug Ends; Czechs Order Curfew: Virus Update
Widowed Mom of 4 Gives Back to Nonprofit That Helped Her Family Before Husband's Death
October 26, 2020MSN
Widowed Mom of 4 Gives Back to Nonprofit That Helped Her Family Before Husband's Death
Professional eater who consumes 16,000 calories in a DAY is a size two
October 26, 2020MSN
Professional eater who consumes 16,000 calories in a DAY is a size two
10 Work-From-Home Wardrobe Essentials You Need ASAP
October 26, 2020MSN
10 Work-From-Home Wardrobe Essentials You Need ASAP
The 11 Long-Term Benefits of Discipline for Kids
October 26, 2020MSN
The 11 Long-Term Benefits of Discipline for Kids
Sadie Robertson has 'just about fully recovered' from coronavirus
October 26, 2020MSN
Sadie Robertson has 'just about fully recovered' from coronavirus
This Is How to Know If Your Stuffy Nose Could Be COVID
October 26, 2020MSN
This Is How to Know If Your Stuffy Nose Could Be COVID
The Physical and Mental Health Benefits of Indoor Cycling
October 26, 2020MSN
The Physical and Mental Health Benefits of Indoor Cycling