Illustration of tampons and menstrual cups
Scientifically Reviewed
Home/Cycle Matters / Period & Bleeding

What Causes Period Cramps?

We all have different experiences of period cramps. While some women are as regular as clockwork and can predict their cramps right down to the day, others might be lucky enough to rarely or never experience the pain of period cramps. They are something many of us expect and plan for, like the menstrual bleeding itself, but we rarely have time to stop and think: what actually causes period cramps and why are they a necessary, if painful, part of our cycle?

What are period cramps?

The medical name for period cramps is Dysmenorrhea. They happen due to a hormone-like substance, prostaglandins, which causes the uterus walls to contract and then shed its lining, resulting in your period. If prostaglandin levels are higher, more pain is often associated with the cramps. This varies from woman to woman, but cramps are likely to become less painful as you get older, or after childbirth.

There are a few other conditions that can cause cramps. Treating these conditions will help stop the symptoms. These conditions include:

  • Endometriosis: when the lining forms outside of the uterus, for example in the fallopian tubes and can cause a more chronic pain than regular period cramps
  • Uterine fibroids which present as non-cancerous growths on the uterus wall that can sometimes cause pain in the affected area
  • Adenomyosis, when the tissue lining the uterus begins to grow into the uterine walls
  • Pelvic inflammatory disease, an infection of a woman’s reproductive organs, usually caused by bacteria transmitted through sex
  • Cervical stenosis, when the opening of the cervix is smaller and restricts the flow of menstrual blood – this can cause a painful increase of pressure in the uterus

In most cases, period cramps are a sign of a healthy body reacting to the natural shedding of the uterus wall. However, if menstrual cramps are disrupting your life every cycle, if your symptoms get worse, or if you begin to get severe cramps after you’re 25 years old, you should speak to your doctor.

Saying goodbye to hormones is a great way to get to know your body better. Natural Cycles is 100% hormone-free and is scientifically proven to be effective. Sign up today to try the world’s first birth control app.

What do period cramps feel like?

Since every woman is different, she’ll experience symptoms in different ways. Typically the cramping pain starts in the lower abdomen one to two days before menstrual bleeding begins. It then peaks after 24 hours and may last for a further two to three days after that. Some women can also experience nausea, an upset stomach or dizziness, as well as pain in their lower back and thighs. For other women, period cramps may feel like a mild yet constant pain. Those with irregular cycles or heavy bleeding are more likely to experience severe period cramps.

Tracking and treating period cramps

If you have mild period pain, aspirin or ibuprofen can provide pain relief. Heat treatment like taking a warm bath or placing a hot water bottle on the back or stomach can also help soothe symptoms. Preventative measures such as avoiding alcohol, caffeine and tobacco in the days leading up to your period may also reduce the symptoms of menstrual cramps, while regular exercise is proven to reduce period pain.

We hope you now understand what causes period cramps and why they are a healthy part of your menstrual cycle. Here at Natural Cycles, we’re on hand to help you learn more about your cycle so you can predict and prepare for symptoms such as PMS, menstrual cramps and more. With our birth control app, it’s easy to document symptoms and keep track of your unique cycle.

Did you enjoy reading this article?

Discover Natural Cycles° today

Jen on the roof terrace at Natural Cycles headquarters.

Written By

Jennifer Gray

A writer with a passion for women’s health, Jennifer Gray has years of experience writing about various reproductive health topics including birth control, planning pregnancy, women’s anatomy, and so much more.

Jack in a suit and tie holding a microphone and giving a presentation.

Scientifically Reviewed

Jack Pearson

Dr. Jack Pearson is Natural Cycles’ in-house medical expert. With 10+ years of experience working in the field of fertility, he dedicates the majority of his time to conducting groundbreaking research within the field of women's health.

Featured Posts

Birth Control

A Birth Control App, not a Period Tracker

4 min read

Birth Control

12 Non-Hormonal Birth Control Methods and How They Work

13 min read

Birth Control

Switching Birth Control Methods: How Do I Change?

9 min read

Want to learn more about a hormone-free future?

Subscribe to our newsletter for access to our latest articles, exclusive promotions and more.

Keep reading...

Period & Bleeding

How long do periods last?

Whether yours lasts for a couple of days or more than a week, your period length is unique to you, and depends on a number of factors. It’s completely normal, to wonder if yours is, well, normal! We’re here to bust some myths around periods, menstrual cycles and more so keep reading to learn ‘how long do periods last?’

9 min read

Period & Bleeding

Why do women have periods?

Join us as we take an in-depth look at the physiology behind the menstrual cycle and answer the question ‘why do women have periods?’ We’ll look at the length and phases of the menstrual cycle and also cover the average amount of bleeding that happens during menstruation. Also, if you want to know what animals have periods, we’ve got a surprise in store! Read on to find out more….

8 min read

Period & Bleeding

Let's Talk About Period Poop

Do you find yourself rushing to the toilet when you’re on your period? Are you plagued by period diarrhea or do you experience constipation instead? While this may be an uncomfortable subject for some, it’s about time we talked about what’s going with period poop. In this post, we’re going to look at the changes in bowel movements around menstruation, why they happen, and what you can do about them…

6 min read