Last month my perio started a week late . When it did start it was only spotting and started the morning after sex from the night before . Through out the day I was spotting a peach pink but only when I wipe . Day 02 the peach pink went to a bright red but still very light almost a light flow but not my normal heavy period that last for 5 days. By the end of the night I was back at light spotting peach pink . Day 03 the spotting continued and ended Midday . Could that be implantation bleeding or a light period ?