Conversation: The conversation between human and AI assistant.
[|Human|] Like most guys, Im freaking out about the possibility of my gf being pregnant. We had sex around 1 AM on 6 Oct. The condum broke and she took plan b 2hours later. We looked at the date of her last period 17 Sept and now Im freaking out because this means she was most fertile and probably ovulating. What are the chances of her being pregnant? Should I worry? By the way, she took a pregnancy test Sunday and it was negative.
[|AI|]  Hello thanks for your query. The plan B is 95 % effective in preventing a pregnancy when taken within 24 hours, however the rate is less around ovulation. If she skips her period, please go for a pregnancy test. If it is negative, do not worry, as plan b often causes normal cycles to be delayed or advanced by a week or more. Repeat the pregnancy test after a week, and if still negative, consult a gynecologist for further evaluation. Take care