Menstrual cramps happen because the uterus is literally squeezing to push out its lining, and those strong squeezes can hurt.

What’s actually happening

  • During a period, the uterus contracts to shed its lining (the blood and tissue seen as menstrual flow).
  • These contractions are triggered by hormonelike chemicals called prostaglandins , which rise just before and at the start of your period. Higher prostaglandins = stronger contractions = more pain.

Why some cramps feel worse

  • Very high prostaglandin levels can reduce blood flow to the uterine muscle, making the pain sharper or more intense.
  • In some people, severe or worsening cramps are linked to conditions like endometriosis, adenomyosis, fibroids, pelvic inflammatory disease, or cervical stenosis, which can all make periods more painful than “typical” cramps.

Normal vs not-so-normal pain

  • Mild to moderate cramps that improve with rest, heat, or over‑the‑counter pain relief are common and usually considered part of primary dysmenorrhea (ordinary period cramps).
  • Pain that is very severe, starts days before bleeding, lasts after the period, or suddenly gets much worse can signal secondary dysmenorrhea from an underlying condition and should be checked by a clinician.

What helps with cramps

  • Common self-care options include heat (heating pad or warm bath), gentle movement, stretching, and NSAID pain relievers like ibuprofen, which lower prostaglandin levels.
  • If these do not help, or if cramps interfere with school, work, or sleep, clinicians can suggest treatments such as hormonal contraception or investigate other causes.

Information gathered from public forums or data available on the internet and portrayed here.