Conversation: The conversation between human and AI assistant.
[|Human|] hi, i am 22 &; i havent gotten my period since november. I have irregular periods, i just started my birth control on may 13th. What are the chances of me getting pregnant this month cause i accidently had unprotected sex &; my doctor told me to use condoms the first month no matter what.
[|AI|]  Hi, Welcome to Chat Doctor. I am Chat Doctor. I will be answering your concerns today. From your notes it appears that you started contraceptive pills without your periods. I hope that you have done pregnancy test and ruled out pregnancy before starting contraceptive pills. Contraceptive pills are effective in preventing pregnancy from day 8 of starting the pills when you start them at any time in a period cycle.  So if you have had unprotected sex after a week of starting the pill, you are protected. The chances of pregnancy are almost nil. If you have had sex within a week of starting the pill, then there is a possibility of pregnancy. The chances of pregnancy are about 20% (one in five). I hope this is helpful.