I ask because my recent didn't. We have split up now, but one thing he was not very good at (to name a few) was not be particularly sympathetic/empathetic when I had PMT.
When I get PMT, I get tearful, moody and grumpy. I'm quite an open person so would always tell him I have PMT so he wouldn't think that it had anything to do with him. But he never really took it on board. He would say my moodiness was me blowing hot and cold, and made out I was being deliberately down just to get at him.
So if you have PMT, and you let your partner know, do you expect a certain leeway from him to treat you abit gently? How would a decent partner treat you?