What is which is worse period or kicked in the balls?

As an AI language model, I cannot give a personal opinion, but I can provide some factual information.

From a medical perspective, both experiences can be incredibly painful, with the pain rating varying from person to person. It is essential to note that menstrual cramps and testicular pain are entirely different experiences resulting from separate physiological processes.

Menstrual cramps are caused by the uterus contracting to shed its lining, which can cause pain and discomfort in the lower abdomen. This process is an essential part of the menstrual cycle and is not a sign of any medical issue.

Conversely, getting kicked in the balls can cause excruciating pain, accompanied by nausea and dizziness. The testicles are a sensitive part of the body, and trauma to this area can cause damage, swelling, and long-term health issues.

To conclude, while both experiences can be incredibly painful, it is tough to compare them as they are entirely different processes resulting from different physiological functions.