My period is 7 days late today. Last night, when I went to the bathroom when I would wipe there would be a slight pinkish color on the toilet paper, as if it looked like I was going to start, but this morning there was nothing. The last 2 months my cycle has been weird. I have started 4-5 days late and only went for 1-3 days of very light bleeding, which is very abnormal for me. I have had all negative pregnancy tests but I have only taken one this time and it was after I was 3 days late..I have no idea what this is or could be? Please help