Hello Thanks for your query. As age advances, the menstrual cycle becomes irregular. Please consult a gynecologist for evaluation of irregular cycles. Stress, anxiety, weight gain, change in diet or sleep, tensions, medications might alter the cycles. Also, polycystic ovaries and hypothyroidism need to be ruled out. At your age, ovarian reserve should be assessed. This is the capacity of your ovaries to form mature eggs, which significantly declines with age. Husband semen analysis should be done. Your fallopian tube patency should be assessed. All the best. Take care.