<s>[INST] My girlfriend and I had sex. She had been on the nuvaring for 7 days. We used a condom, but it broke and I withdrawled right away. I did not ejaculate, however we are worried about Precum. She took plan b 3 hours after just to be safe. What are the chances of her being pregnant? [/INST] Hello,Your girlfriend is currently on Nuvaring and she took Plan B 3 hrs after breaking condom. Here, chance of pregnancy is extremely RARE.She will get a withdrawal bleeding within 3 to 5 days and next cycle may be delayed for 1 to 2 weeks due to hormonal imbalance. However, she can undergo one home pregnancy test to clear doubt if her period is delayed more than 1 week.Good luck and practice safe sex in future. </s>