A 18-year-old female asked:
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does implantation blood have a different odor than period blood? i am spotting a week earlier than my period (unusual, its sometimes 2 days late).

1 doctor answer
Dr. Jeff Livingston
21 years experience Obstetrics and Gynecology
Implantation: Implantation bleeding is not really as common as the internet would have you believe. When it does happen it's usually 6-12 days after ovulation. A pregnancy test 7-10 days after unprotected intercourse is much more helpful. Implantation bleeding occurs exclusively in pregnant women. The color of the blood does not matter.
Answered on Jun 17, 2017

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