Depends on the cycle: Pregnancy test blood or urine only becomes positive after implantation, that is when fertilized egg has attached to the wall of uterus it takes 6to12 days after ovulation average time 9days so if you are pregnant blood pregnancy test becomes positive 3to4 days after implantation or 10to11 days after fertilization and ovulation it all depends what time during your menstrual cycle you have sex.
Answered 2/28/2014
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