Irregular menstruation

Patient: I am 24 year old, going to marry very soon but my menstruation are not regular its comes only 4 to 5 times in a year with 4- 5 months gap . what should i do i was consult a gyn but they said it is normal because i dont have any other problem except it like facial hair , excess weight etc but still i am very tense what should i do pls suggest