When does implantation bleeding usually take place

My period is suppose to come tm according to glow but today I have spotting on and off earlier it was extremely light pink then later on I had it appear a bit darker but then it stopped now no spotting🤷🏻‍♀️I ovulated the 29th is this possible that I’m implanting later and possibly going to end up pregnant this is weird for me cause this is the exact time frame I was pregnant last year but I miscarried weird if I end up pregnant same time frame ( obv I would be thrilled ) but anyway I don’t know what to make of this I have not had any of my normal period symptoms which usually I feel by now