Endometriosis.

[Mister Obvious]

For anyone who doesn't know...

Endometriosis is a condition where tissue similar to the uterine lining grows outside the uterus, often causing pain and other symptoms.

While it can sometimes be mild or even asymptomatic, endometriosis can progress and lead to more severe pain, heavier bleeding, and other complications as it spreads and causes inflammation and scar tissue formation.

Endometriosis can intensify ovulation pain because the inflammation and scar tissue caused by the disease worsen the natural inflammatory process of ovulation.

Endometrial tissue can also grow in other areas, including on blood vessels, the cervix, diaphragm, lungs, nerves, and inside of scars.