Hello dear I understand your concern Your delayed period could be due to hormonal imbalance, ovarian cyst, endometriosis, excessive stress, thyroid dysfunction. There is no chance of the pregnancy as you got regular period after the sexual intercourse. I would suggest to consult the gynecologist and undergo reproductive and thyroid hormone analysis, USg scan and ovarian follicle study. Treatment will depend on the specific cause Progesterone pill or shot can be used to induce the period in hormonal imbalance. Meanwhile avoid stress, take healthy diet, do regualr exercise and drink plenty of water. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar