A member asked:

Gf had a week late period last month05/09. now her period is 11 days late but we had protected sex. could having a late period throw her cycle off?

2 doctors weighed in across 2 answers
Dr. Richard Zimon answered

Specializes in Internal Medicine

Her cycle: sounds like it is "off" PERIOD! You may just do well as a "couple" with a "safer" form of Birth Control!!! BTW a Pregnancy test may be indicated (JUST to be sure!!) Hope this helps! Dr Z

Answered 7/23/2016

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Depends: Normal cycles are 21-32 days, counting from the first day of bleeding to the next first day of bleeding. If you counted from the first day of bleeding of the'late' period, and it fell within that range then it was on time. One in four normal couples get pregnant each cycle. Unprotected intercourse could lead to pregnancy but also a variety of sexually transmitted diseases. Be smart, use condoms.

Answered 3/22/2020

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