What is the chance of getting pregnant if you have unprotected sex once?

Sparrow

New member
I'm just curious more than anything to know if anyone knew how likely (percentage wise) you are to get pregnant if you have unprotected sex once. Also, do you have a lot less of a chance getting pregnant a week before your period. I know that you can get pregnant whenever you have sex, I'm more so just interested in the statistics.
 
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