Hi Dr. Purushottam welcomes you to HCM virtual clinic! Thanks for consulting at my virtual clinic. I have carefully gone through your case, and I think I have understood your concern. I will try to address your medical concerns and would suggest you the best of the available treatment options. 1] Please do not panic. 2] It appears from your history that you have missed the pills during days 10 to 20 of the cycle- which are most fertile days 3] Tab PLAN B or i pill can be taken within 24 hours of unprotected sex activity, or at least within 72 hours to be effective. 4] Aslo please continue to take rest of the birth control pills as such. 5] Wait for onset of periods, if you miss the one, then get urine test done. Even if it is positive, you can opt for pills to terminate unwanted pregnancy. I hope my answer helps you. Thanks. Wish you great health.