Haven't RTFT but...
'ppl have such a hard time understanding that other parts of the body besides the uterus are involved in period cramping'
Thinking back, I simply wouldn't have noticed if any other part of my body was cramping because the pain from my uterus was so completely overwhelming. The only thing it's remotely like, IMO, is labour. In some ways worse because the dysmenorrhea was continuous, at least labour contractions had breaks.
Why does that person - oozing contempt for women - have such a hard time understanding that unless you're a female you have no bloody clue what having a period is like.