Why periods are painful

Periods are painful mainly because of what your body is doing behind the scenes to shed the uterine lining.

During your period, your body releases chemicals called prostaglandins. These chemicals make the uterus contract, almost like a muscle squeezing. The purpose is to help push out the lining of the uterus. Those contractions are what you feel as cramps.

When the contractions are strong, they can temporarily reduce blood flow and oxygen to the uterus. That lack of oxygen is what causes the sharp, aching, or throbbing pain many people feel in the lower abdomen.

Some people feel more pain than others because their bodies produce higher levels of these chemicals. More prostaglandins usually means stronger contractions and more intense cramps.

Pain can also spread beyond the lower abdomen. It may be felt in the lower back, hips, or even down the thighs. Other symptoms like nausea, fatigue, or headaches can happen for the same reason, because those chemicals affect the whole body.

In some cases, period pain is not just from normal contractions. It can be linked to underlying conditions like Endometriosis or Uterine Fibroids. When this happens, the pain is often more severe, lasts longer, or feels different from usual cramps.

So in simple terms, periods hurt because your uterus is actively contracting to do its job. For most people, this is normal, but the intensity can vary from person to person.

If you ever notice that the pain is getting worse over time or is stopping you from doing your normal activities, it’s worth getting checked to rule out other causes.