so today is the day when I'm officially suppose to start my period.. 2 days ago I could tell that I…

so today is the day when I'm officially suppose to start my period.. 2 days ago I could tell that I was starting with the light color than yesterday morning around 7:30 am it was pink on the TP but 1am this morning I went to pee and there was nothing? I had a friend saying it could be implantation bleeding is this true? I'm trying to concieve.