I want to know when does implantation bleeding exactly occur? On the net, it is saying that implantation bleeding occurs 6-10 after ovulation that is just before your periods so it's a bit confusing. My periods were late by a week and it came the flow was quite good(not THAT heavy) for two days, while at night it became less and on the 3rd day it was minimal. I took a
pregnancy test on the 4th day, it was negative. Was this implantation bleeding or periods? I got intimate(without sex) with my boyfriend after my ovulation date.