In fairness to men (she says, in a very quiet voice) I've never really done the whole PMT thing, at least that I'm conscious of - so while that doesn't make it 'imaginary' in the slightest, it might be why some men, who have contact with women like that, think it! (That and "women's problems" getting you anywhere
Well, and the fact also that pain is a very subjective thing, and people's pain tolerances and physical characteristics vary wildly. The childbirth experience, for example, differs greatly from woman to woman, and even from birth to birth - I was lucky enough to have pretty easy birthing experiences, but that doesn't negate someone else's horrific experiences. However, many people do seem to be of the mindset that if THEY didn't experience horrible pain and complications, there's no reason why anyone ELSE should, and the fact that they did was either their fault, or their imagination, or both.
I have a friend who's had a lot of horrible health problems, as well as many accidents, and she's categorized the degree of pain she experiences to a very precise range - eg. Doctor: "On a scale from 1 to 10, how bad is the pain?" Her: "Well, this pain is less than the pain from a dislocated vertebra, but more than the pain from a soft tissue injury in the jaw caused by a car crash." When you think of it, pain on a scale from 1 to 10 IS kind of silly unless you have a range of things to compare it to!