Unlikely: Having a regular period on september 20 means not pregnant on september 20. The next ovulation would be around october 4, so pregnancy is very unlikely... But if one starts having unprotected sex today (october 1), a new pregnancy could start during the coming few days. If still worried, one can do a urine pregnancy test 3 weeks after the last episode of sex.
Answered 10/1/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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