I would like to dismiss PMS as an evil sexist invention, but 2-3 days before I get my period I routinely have some big emotional outburst (fight with husband, crying for no reason, etc.). I guess it could be psychosomatic, but it does happen.

I have mentioned it to my male T when it has seemed relevant, especially in relation to some other medical stuff I've had going on. I felt sort of shy about it—in fact I think I posted a similar question here at the time—but it was fine, and now I think it's something a T should be prepared for. Menstruation is a normal bodily function.