how early is too early?

yesterday was just under a week (6 days) since my period ended and I've had nothing since. I stopped tracking my ovulation but glow says about another week till I ovulate. but yesterday wheni went pee and I wiped it was pink like there was blood. it stopped and then came back after we BD'd. I haven't had anything today yet. is it possible I ovulated a lot earlier and this could be implantion bleeding? or is it too early to have ovulated? I know I couldn't test for another few days at home. my period was also 2 days shorter than normal.