Hello dear I understand your concern Pregnancy is not there as, you already got two period after the intercourse. You have to investigate about the other cause of the delayed period like Hormonal imbalance, endometriosis, thyroid dysfunction, PCOS, Excessive stress and change in dietary habit. I would suggest to consult the gynecologist and undergo following investigation: USG scan, reproductive and thyroid hormone analysis , ovarian follicle study. Period can be induced by the progesterone pill. Avoid stress Do regular exercise Take healthy diet, green leafy vegetables and fresh fruits Hope this may help you Contact HCM for the further health query Best regards Dr. Sagar