A member asked:
got what i thought was implantation bleeding 1 day before expected af lasted only 3 days very light but neg p test should i wait longer?
1 doctor answer
Dr. John Berryman answered
53 years experience Obstetrics and Gynecology
"AF" ?: Implantation occurs about 5-7 days after fertilization, and may in fact produce spotting. If not pregnant, a period should start 7-8 days after that. Unsure what is meant by "AF", but if your "period" was light, get a serum pregnancy test (HCG) from your healthcare provider, which is very accurate.
Answered on Oct 20, 2014
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