San Luis Obispo County Victim Services. 1  San Luis Obispo County District Attorney's Office. Courthouse Annex Room 384. 2  Victim/Witness Assistance Center. Contact: (866) 781-5821| Email: victimwitness@co.slo.ca.us.
1 - 4 of 4 answers. 1  Testing a week after ovulation is way too early. 2  You can implant 6-12 days after ovulation, plus add 3 days to build enough hcg in the system to be detected. 3  The first day of my last period was May 3rd.  The first day of my last period was May 3rd.
Less sensitive urine tests and qualitative blood tests may not detect pregnancy until three or four days after implantation. Menstruation occurs on average 14 days after ovulation, so the likelihood of a false negative is low once a menstrual period is late.