<s>[INST] I am taking Novelon (Birth control pills) since past two months, now I have finished the course but next day after completion of the course, i had unsafe sex with my husband, what are my chances of pregnancy? Ideally after completion of the course when shoul my period starts? [/INST] Welcome to Chat Doctor. I am Chat Doctor. I will be answering your concerns today.  Furthermore, I presume that you have taken the Novel on pills correctly.  Since you have had sex in the pill free period, your chances of pregnancy are nil. This pill free period is safe period. You should be starting your period in 3-5 days time. Do not worry about it. But do start your next pack of pills at the right time. I hope this is helpful. If you have further concerns, do contact me through Chat Doctor. Best wishes, Chat Doctor.  </s>