how many days before a period does implantation occur
1 Remember the date of your last period. 2  With a stable menstrual cycle of 28-30 days, ovulation occurs on the 13 th -16 th day and implantation is possible within the next 10 days after ovulation.3  Implantation bleeding may be experienced 2-7 days before the beginning of the regular menstruation.mplantation bleeding starts approximately in a week before period. Thus, bloody discharge after ovulation is likely to indicate possible conception. Bloody discharge after missed period is in question, the majority of gynecologists claim it`s impossible. 1  Character of the bloody discharge.