A member asked:

Had protected sex for the first time 3 weeks ago now girl friends period a week late still not here she stressed she pregnant why could this be ?

A doctor has provided 1 answer

Hard to speculate: What you think is safe sex may not have been so safe.Condoms have a failure rate of 20%/yr and are often used wrong. If any intercourse happened before you put it on, you can leak enough sperm to cause pregnancy.Some girls can be late and nothing be wrong, they are just late. If a urine pregnancy test is positive she is pregnant.But it can be falsely negative early in pregnancy.

Answered 11/7/2016

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