If someone's menstrual cycle is irregular, should they be concerned. >> Yes. Yes. Yes.>> How irregular. What's like if I'm not getting my menstrual cycle. >> Absolutely not good.You should go see a doctor. If your cycle is irregular, if the calendar trick, you're putting your finger and it's nowhere near when your cycle's coming. Or I have women who say, "Oh, there's no way I could predict it." Or, "I know it will come, but it'll come every four to six weeks." Your body's meant to work like clockwork when i ...