Hello Thanks for your query. You have taken hormonal medications quite erratically, which is highly unwise. Also, as you have had unprotected intercourse, and your periods are overdue, there is a possibility of pregnancy in your case. I would advise you to take a urinary pregnancy test and confirm or rule out a pregnancy for sure. Also, stick to one brand of pills, and do not switch over brands casually or without medical prescription. Also, erratic intake of pills would lead to further irregular cycles. You could consult a gynecologist and have an appropriate pill assigned to you. Take care, and feel free to ask any further questions.