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. First of all do not get panic. Please continue with your prescribed medicines as before. I will suggest you to note the day of your menstrual cycle when this incidence occurred. If your cycles are regular, then day 10 to 20 of the cycle are fertile days. If it has happened before or after that period you are less likely to be pregnant. If you are within 72 hours of this incidence you can use emergency contraceptive pill - EC 72. Or else if you have missed your periods get a urine pregnancy test done. I hope my answer helps you. Thanks.