Why Are My Period Cramps So Bad?

You’re curled around a heating pad with the ibuprofen finally kicking in, an hour too late, and you’ve texted “I’m fine” to three people. You’re not fine. You’re lying on the floor.

What’s happening in there

The NHS¹ says period pain happens when your womb tightens during your period, and that it’s often a normal part of the menstrual cycle.

MedlinePlus² ties the tightening to prostaglandin, a hormone made in the uterus. Cleveland Clinic³ says the same, and explains why ibuprofen helps: it reduces the amount of prostaglandins in your body.

It’s common. Cleveland Clinic³ says about 60% of people with a uterus have mild cramps during their period, while 5% to 15% report pain so severe that it affects their daily activities. It adds that providers believe the actual number is higher, because people under-report it.

Ordinary cramps vs. something else

Doctors split period pain into two types, and the split tells you what to expect.

Cleveland Clinic³ describes primary dysmenorrhea as pain without an underlying medical condition. It starts one or two days before your period, or when the bleeding starts, and typically fades within 48 hours of the period beginning, or after about two or three days. It’s the more common type.

Secondary dysmenorrhea comes from a condition in the reproductive organs. Cleveland Clinic³ lists endometriosis, adenomyosis, fibroids and pelvic inflammatory disease, and says the pain usually begins earlier in your cycle and lasts longer. MedlinePlus² adds IUD use, PMS, infections and stress to its list, and says secondary pain develops later, where primary pain tends to show up in younger women.

The NHS⁴ names the same causes: endometriosis, adenomyosis, fibroids, pelvic inflammatory disease, and contraceptive devices like IUDs.

The endometriosis flag

One of those deserves its own paragraph, because it’s easy to miss. The NHS⁴ says endometriosis can cause severe period pain that stops you from doing your normal activities, and heavy periods where you change a pad or tampon every 1 to 2 hours. It can also cause pelvic discomfort, pain when you poop or pee, pain during or after sex, and fatigue.

The NHS⁴ adds that it can take a long time to diagnose, and you may need several different tests. A GP usually starts with an exam and blood tests, then refers you to a gynecologist, a specialist, for further testing such as an ultrasound, an MRI or a laparoscopy. No treatment cures it, the NHS says, but treatment can help manage symptoms such as pain.

If your pain keeps pace with that description, say so out loud at the appointment.

What helps

Heat is the oldest remedy and still on every list. The NHS¹ suggests a bath, shower or hot water bottle. MedlinePlus² says to apply a heating pad below your belly button, and never to fall asleep with it on.

Movement helps too. The NHS¹ suggests gentle activity like yoga or swimming, and abdominal massage. Cleveland Clinic³ lists regular exercise, rest, massage, and avoiding caffeine and smoking, along with yoga and acupuncture. The NHS says cutting back on alcohol and quitting smoking may also give relief.

Then the pain reliever, and here the two sources differ on timing. Cleveland Clinic³ says to take an NSAID such as ibuprofen as soon as cramping begins. MedlinePlus² says to start the day before your period is expected and continue regularly for the first few days. Both point toward starting early, not waiting until the pain peaks. Ask your clinician which plan fits you, and whether NSAIDs are safe for you at all.

For severe cases, the NHS¹ says a GP may suggest anti-inflammatory medicines, a TENS machine, or hormonal contraception, which can lighten your flow. Cleveland Clinic³ lists hormonal birth control among its recommended treatments.

The play

Try this: get ahead of it

Note the day your cramps usually start, for a few cycles.

Use that date to plan: ask your clinician when to take your pain reliever, and put the heating pad where you’ll reach it.

Move a little every day, not only on the bad ones.

When to get checked

Don’t wait if

1. Urgent

   Go to urgent care or the ER right away if you have a fever with pelvic pain, foul-smelling discharge, or sudden severe pain. MedlinePlus² says to seek immediate care for those. The NHS¹ says the same for pelvic or period pain that’s severe or worse than usual when painkillers haven’t helped.

Cleveland Clinic³ says to contact a provider if you have severe or unusual cramps, or cramps that last more than three days. MedlinePlus² adds two more: self-treatment hasn’t worked after three months, or you have pain outside your menstrual cycle. The NHS¹ says to see a GP if your periods become more painful, heavier or irregular, or if the pain interferes with your daily activities.

Book an appointment if any of these fit:

• Your cramps are getting worse over time
• Pain hasn’t eased with a pain reliever and heat after a few months
• You have pelvic pain when you aren’t on your period
• Periods are also heavy, or you change a pad or tampon every 1 to 2 hours
• Sex, peeing or pooping hurts around your period

Next month, text “I’m fine” only when it’s true.