Hi welcome to healthcaremagic. I agree gone through your question. Sex on 1st day of ovulation has great chance to conceive but also you had bleeding on your supposed days. The symptoms of more eating, urination are not accurately suggest pregnancy. I would advise to do urine pregnancy kit test. That will rule out all queries. And consult a gynecologist if not receive next upcoming bleeding. Hope i answered your question. Would be happy to help further. Take care.