1 doctor weighed in:

What can prevent pregnancy after this mishap?: I had unprotected sex and used a plan B pill. Though ovulation was set for the day after I took it.

1 doctor weighed in
Dr. John cuong Doan
Family Medicine

In brief: Plan B is designed

to work in a pinch when the risk of conception is good.
It sounds like you had unprotected intercourse within 2 days of suspected ovulation date, which is within the danger window. Monitor your hormonal response in the next 2 weeks, as you should have some bleeding associated with the Plan B if it was successful. If no bleeding after 2 weeks, check 2 pregnancy tests 1 week apart.

In brief: Plan B is designed

to work in a pinch when the risk of conception is good.
It sounds like you had unprotected intercourse within 2 days of suspected ovulation date, which is within the danger window. Monitor your hormonal response in the next 2 weeks, as you should have some bleeding associated with the Plan B if it was successful. If no bleeding after 2 weeks, check 2 pregnancy tests 1 week apart.
Dr. John cuong Doan
Dr. John cuong Doan
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