Hello dear Understand your concern. Confirm the pregnancy by blood HCG level after week again. Following are the other causes of delayed period: High level of stress, Change in dietary habits, Late ovulation, Excessive weight loss/gain, Drugs: Birth control pills, thyroid medication, Excessive tea and caffeine, Thyroid disorder, Hormonal imbalance, PCOS, dysfunctional uterine bleeding Medroxyprogesterone injection can be used to induce bleeding Do regular walking and exercise, Eat healthy diet, Avoid stress Take fruits like papaya, orange and pineapple Also note that Menstruation required co ordinate action of various hormone that secreted by ovary (estrogen and progesterone) and brain (FSH and LH). If any above hormone is decreased or increased there is imbalance in menstruation. So please do full hormonal profile : Estrogen, progestron, LH, FSH, HCG and thyroid hormone. That help to diagnose hormonal imbalance. Endometrial biopsy, USG, ovarian follicle study. After confirmation you can take treatment according So please go ahead. Hope this may help you All the best. Stay healthy.