When does implantation bleeding occur, if fertilization has occurred?

[pinky36]

Have 2 children already and carnt remember ever havin implantation bleeding! Worried I might b pregnant, and just wondered when to look out for it, if it does happen? x

not all woman have implantation bleeding, I never have! I think it usually occurs one to two weeks after fertilization.

around the time your period is due I think. But it is pretty rare to have it at all.