Hello dear Understand your concern Most common cause of delayed period in sexually active women is pregnancy. First I manage this type of situation by doing USG scan and or blood HCG to exclude the pregnancy possibility as it is more accurate than urine pregnancy kit. If pregnancy should be not there than other possibility of delayed period should be investigated like Hormonal imbalance: by reproductive hormone analysis like FHS, LH, Progesterone, Estrogen and prolactin Thyroid dysfunction: by TSH, TT4 and TT3 analysis Ovarian cyst/PCOS: by ovarian follicle study and hormone analysis Change in dietary habit and life style, excessive stress, loss and gain of weight: should be evaluated by history. I give advice to start tyronorm and other thyroid medicine in thyroid problem. In hormonal imbalance: Medroxyprogesterone acaetate/primolut N should be prescribed to induce period. For other cause I give following advice to the patient: take healthy diet, vegetables and fruits, exercise like morning and evening walk followed by medication for 45 minutes, avoid stress. Hope this may help you Best regards Dr. Sagar