Thinking about how I used to wear hot water bottles for the first 2 days of my period. I had to move 2 sizes of skirt up, and carry a kilt pin as a waistband extender to cope with the amount of bloating I experienced.
And that isn't in the same universe of pain as the girls and women who lived with endometriosis etc.
I'm not even considering discussing women's experience of ligament pain (different anatomy) and vulnerability to MSK injuries that have long-lasting impact. There are so many aspects of women's pain experiences that have been under-researched and disregarded as worthy of attention.
But, by all means, let's expend precious resources conducting a non-informative study.