Usually when this question is asked, its because the period is "late" due to pregnancy. I dont know if hysterectomy solves the PMDD problem - its not like getting your tonsils out. Youre altering a major part of your biological clock. Like when people go on the night shift and try to sleep during the day? Its kind of a big dill. Youre in a different state, not necessarily a fixed or repaired state.