Some months i don't get pelvic pain during my periods but then i have the pain the days after it ends. why does this happen? sometime even my groin hurts. my period is normal it's just this change on the last 2 or 3 periods?

Are your menstrual cycles more variable than they used to be ? You may be starting to miss ovulating every month. The average age of menopause is 51.3 and this change takes place slowly for several years before stopping your cycles altogether. The pelvic pain usually occurs with ovulation, but it may be starting to become less regular . I will give you a chart so you can keep track of your cycles