'dry' discharge white in color, test negative

Hi,
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If you had been sexually active around your ovulation day, chances of pregnancy are possible. If fertile mucus had been present, sperms can stay alive for 5-7 days. After ovulation, egg has only 24 hours to get fertilized. Implantation usually occurs within 6-12 days after ovulation. Wait and watch for your periods/withdrawal bleeding. Look out for development of any other new symptoms if pregnancy is suspected. If periods do not start within 10 days of expected period dates, or if you get abnormal periods, or if you suspect chances of pregnancy, consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately).
Take care.